<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2011-7582</journal-id>
<journal-title><![CDATA[Revista Colombiana de Cirugía]]></journal-title>
<abbrev-journal-title><![CDATA[rev. colomb. cir.]]></abbrev-journal-title>
<issn>2011-7582</issn>
<publisher>
<publisher-name><![CDATA[Asociación Colombiana de Cirugía]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2011-75822019000200171</article-id>
<article-id pub-id-type="doi">10.30944/20117582.111</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Acalasia, una visión actual]]></article-title>
<article-title xml:lang="en"><![CDATA[Achalasia, a current view]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Prieto]]></surname>
<given-names><![CDATA[Robin Germán]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Prieto]]></surname>
<given-names><![CDATA[Jhon Edison]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Casas]]></surname>
<given-names><![CDATA[Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ballén]]></surname>
<given-names><![CDATA[Hernán]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro de Enfermedades Hepáticas y Digestivas, CEHYD SAS  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro de Enfermedades Hepáticas y Digestivas, CEHYD SAS  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hospital Central de la Policía  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Hospital Central de la Policía  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<volume>34</volume>
<numero>2</numero>
<fpage>171</fpage>
<lpage>178</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S2011-75822019000200171&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S2011-75822019000200171&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S2011-75822019000200171&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La palabra &#8216;acalasia&#8217; es un neologismo de origen griego, acuñado por el médico inglés Sir Edwin Cooper en 1913, y significa: sin calidad de relajación. La acalasia es una enfermedad que se manifiesta clínicamente por disfagia para sólidos y para líquidos, regurgitación esofágica, dolor retroesternal, tos, broncoaspiración, neumonía, acidez estomacal y pérdida de peso. Su fisiopatología corresponde a la ausencia de peristalsis esofágica e insuficiente relajación del esfínter esofágico inferior. Estas anormalidades motoras se deben a la pérdida de las neuronas mientéricas que coordinan la peristalsis esofágica y la relajación del esfínter esofágico inferior. Fue descrita por primera vez por Sir Thomas Willis en 1674. Aunque actualmente se considera idiopática, se han comenzado a considerar como posibles causas las alteraciones autoinmunitarias y la predisposición genética; además, las infecciones por virus herpes y por virus herpes zóster se han implicado como causas probables. Su incidencia anual oscila entre 0,3 y 1,63 por 100.000 personas en adultos, con una prevalencia anual de 10 en 100.000 habitantes. Afecta por igual a los dos sexos, y el grupo etario más afectado es el de 30 a 60 años. El diagnóstico se sospecha por los síntomas que presenta el paciente, de los cuales la disfagia es el más importante. Se confirma por medio de la endoscopia de las vías digestivas altas, el esofagograma y la manometría de alta resolución. El tratamiento sigue siendo paliativo y se puede orientar por el subtipo de acalasia, según la clasificación de Chicago. Los mejores resultados se obtienen mediante las técnicas de dilatación neumática, miotomía laparoscópica de Heller y, más recientemente, mediante la miotomía endoscópica peroral (Per-Oral Endoscopic Myotomy, POEM), descrita por Haruhiro Inoue en Japón en el año 2008. Aún faltan estudios prospectivos aleatorizados con seguimiento a largo plazo para determinar cuál es la mejor técnica. Se presenta una revisión actualizada del tema.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The word achalasia is a neologism of Greek origin, coined by the English physician Sir Edwin Cooper in 1913, and means no quality of relaxation. Achalasia is a disease clinically manifested by dysphagia with both solids and liquids, esophageal regurgitation, retrosternal pain, cough, bronchial aspiration, pneumonia, heartburn and weight loss. Physiopathologically it corresponds to the loss of esophageal peristalsis and to an insufficient relaxation of the lower esophageal sphincter (LES). These motor abnormalities are due to the loss of myenteric neurons that coordinate esophageal peristalsis and relaxation of the LES. First described by Sir Thomas Willis in 1674, and although it is currently considered idiopathic, it has begun to be considered as possible causes autoimmune components and genetic predisposition; viral infections by herpes and chickenpox zoster have also been implicated as probable causes. Its incidence ranges from 0.3 to 1.63 per 100,000 adults, with a prevalence of 10 in 100,000 inhabitants per year. It affects equally any gender, and the age group between 30 and 60 years is the most affected. The diagnosis is suspected based on the symptomatology, with dysphagia being the most important symptom. It is confirmed with the performance of endoscopy of the upper digestive tract, esophagogram and high resolution manometry. The treatment remains palliative, and may be guided by the subtype of achalasia, according to the Chicago classification. The best results are obtained by the techniques of pneumatic dilation, Heller&#8217;s laparoscopic myotomy, and more recently by the POEM technique (per oral endoscopic myotomy), described in 2008 in Japan by Haruhiro Inoue. There is still a lack of prospective randomized studies with long-term follow-up that determine which is the best technique. An updated review of the subject is presented.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[acalasia del esófago]]></kwd>
<kwd lng="es"><![CDATA[trastornos de la motilidad esofágica]]></kwd>
<kwd lng="es"><![CDATA[diagnóstico por imagen]]></kwd>
<kwd lng="es"><![CDATA[manometría]]></kwd>
<kwd lng="es"><![CDATA[cirugía endoscópica por orificios naturales]]></kwd>
<kwd lng="es"><![CDATA[miotomía]]></kwd>
<kwd lng="en"><![CDATA[esophageal achalasia]]></kwd>
<kwd lng="en"><![CDATA[esophageal motility disorders]]></kwd>
<kwd lng="en"><![CDATA[diagnostic imaging]]></kwd>
<kwd lng="en"><![CDATA[manometry]]></kwd>
<kwd lng="en"><![CDATA[natural orifice endoscopic surgery]]></kwd>
<kwd lng="en"><![CDATA[myotomy]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Awaiz]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Yunus]]></surname>
<given-names><![CDATA[RM]]></given-names>
</name>
<name>
<surname><![CDATA[Khan]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Memon]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Memon]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Systematic review and meta-analysis of perioperative outcomes of peroral endoscopic myotomy (POEM) and laparoscopic Heller myotomy (LHM) for achalasia]]></article-title>
<source><![CDATA[Surg Laparosc Endosc Percutan Tech]]></source>
<year>2017</year>
<volume>27</volume>
<page-range>123-31</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Furuzawa-Carballeda]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Torres-Landa]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Valdovinos]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<name>
<surname><![CDATA[Coss-Adame]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[New insights into the pathophysiology of achalasia and implications for future treatment]]></article-title>
<collab>Martín del Campo LA.Torres-Villalobos G</collab>
<source><![CDATA[World J Gastroenterol]]></source>
<year>2016</year>
<volume>22</volume>
<page-range>7892-907</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Boeckxstaens]]></surname>
<given-names><![CDATA[GE]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The lower oesophageal sphincter]]></article-title>
<source><![CDATA[Neurogastroenterol Motil.]]></source>
<year>2005</year>
<volume>17</volume>
<numero>^sSuppl.1</numero>
<issue>^sSuppl.1</issue>
<supplement>Suppl.1</supplement>
<page-range>13-21</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Willis]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<source><![CDATA[Pharmaceutice rationalis sive diatribe de medicamentorum operationibus in human corpore]]></source>
<year>1674</year>
<publisher-loc><![CDATA[London ]]></publisher-loc>
<publisher-name><![CDATA[Hagae Comitis]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Boeckxstaens]]></surname>
<given-names><![CDATA[GE]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Achalasia From bench to peroral endoscopic myotomy]]></article-title>
<source><![CDATA[Dig Dis]]></source>
<year>2016</year>
<volume>34</volume>
<page-range>476-82</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Boeckxstaens]]></surname>
<given-names><![CDATA[GE]]></given-names>
</name>
<name>
<surname><![CDATA[Zaninotto]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Richter]]></surname>
<given-names><![CDATA[JE]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Achalasia]]></article-title>
<source><![CDATA[Lancet]]></source>
<year>2014</year>
<volume>383</volume>
<page-range>83-93</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vaezi]]></surname>
<given-names><![CDATA[MF]]></given-names>
</name>
<name>
<surname><![CDATA[Pandolfino]]></surname>
<given-names><![CDATA[JE]]></given-names>
</name>
<name>
<surname><![CDATA[Vela]]></surname>
<given-names><![CDATA[MF]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[ACG clinical guideline Diagnosis and management of achalasia]]></article-title>
<source><![CDATA[Am J Gastroenterol]]></source>
<year>2013</year>
<volume>108</volume>
<page-range>1238-49</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Etchegaray]]></surname>
<given-names><![CDATA[DA]]></given-names>
</name>
<name>
<surname><![CDATA[Rodríguez]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Higuera]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Ortiz]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Chapa]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Etchegaray-Solana]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Cardiomiotomía graduada con funduplicatura anterior laparoscópica en acalasia, experiencia de 48 casos]]></article-title>
<source><![CDATA[Rev Gastroenterol México]]></source>
<year>2018</year>
<volume>83</volume>
<page-range>106-11</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pandolfino]]></surname>
<given-names><![CDATA[JE]]></given-names>
</name>
<name>
<surname><![CDATA[Gawron]]></surname>
<given-names><![CDATA[AJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Achalasia A systematic review]]></article-title>
<source><![CDATA[JAMA]]></source>
<year>2015</year>
<volume>313</volume>
<page-range>1841-52</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tuason]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Inoue]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Current status of achalasia management A review on diagnosis and treatment]]></article-title>
<source><![CDATA[J Gastroenterol]]></source>
<year>2017</year>
<volume>52</volume>
<page-range>401-6</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Howard]]></surname>
<given-names><![CDATA[PJ]]></given-names>
</name>
<name>
<surname><![CDATA[Maher]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Pryde]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Cameron E]]></surname>
<given-names><![CDATA[WJ]]></given-names>
</name>
<name>
<surname><![CDATA[Heading R]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Five-year prospective study of the incidence, clinical features, and diagnosis of achalasia in Edinburgh]]></article-title>
<source><![CDATA[Gut]]></source>
<year>1992</year>
<volume>33</volume>
<page-range>1011-5</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Borráez]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Gómez]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Meza]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Oliveros]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Pinilla]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Prieto]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Esofagograma imágenes que valen más que mil palabras]]></article-title>
<source><![CDATA[Revista Colombiana de Gastroenterología]]></source>
<year>2017</year>
<volume>32</volume>
<page-range>258-67</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kahrilas]]></surname>
<given-names><![CDATA[PJ]]></given-names>
</name>
<name>
<surname><![CDATA[Pandolfino]]></surname>
<given-names><![CDATA[JE]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Treatments for achalasia in 2017: How to choose among them]]></article-title>
<source><![CDATA[Curr Opin Gastroenterol.]]></source>
<year>2017</year>
<volume>33</volume>
<page-range>270-6</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Flández]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Monrroy]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Morales]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Cisternas]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Clasificación de Chicago para trastornos de la motilidad esofágica, versión 3 0]]></article-title>
<source><![CDATA[Gastroenterología Latinoamericana]]></source>
<year>2016</year>
<volume>27</volume>
<page-range>54-61</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hani]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Bernal]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Leguízamo A, Zuluaga C, Vargas R, Vergara H, et al Cómo realizar e interpretar una manometría esofágica de alta resolución usando la clasificación de Chicago 3.0]]></article-title>
<source><![CDATA[Revista Colombiana de Gastroenterología]]></source>
<year>2017</year>
<volume>32</volume>
<page-range>369-78</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hani]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Leguízamo]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Carvajal]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Mosquera-Klinger]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Costa]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Cómo realizar e interpretar una manometría esofágica de alta resolución]]></article-title>
<source><![CDATA[Revista Colombiana de Gastroenterología]]></source>
<year>2015</year>
<volume>30</volume>
<page-range>74-83</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pandolfino]]></surname>
<given-names><![CDATA[JE]]></given-names>
</name>
<name>
<surname><![CDATA[Kwiatek]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<name>
<surname><![CDATA[Nealis]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Bulsiewicz]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Post]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Kahrilas]]></surname>
<given-names><![CDATA[PJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Achalasia A new clinically relevant classification by high-resolution manometry]]></article-title>
<source><![CDATA[Gastroenterology]]></source>
<year>2008</year>
<volume>135</volume>
<page-range>1526-33</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Salvador]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Costantini]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Zaninotto]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Morbin]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Rizzetto]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Zanatta]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The preoperative manometric pattern predicts the outcome of surgical treatment for esophageal achalasia]]></article-title>
<source><![CDATA[J Gastrointest Surg]]></source>
<year>2010</year>
<volume>14</volume>
<page-range>1635-45</page-range></nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pratap]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Kalapala]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Darisetty]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Joshi]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Ramchandani]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Banerjee]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Achalasia cardia subtyping by high-resolution manometry predicts the therapeutic outcome of pneumatic balloon dilatation]]></article-title>
<source><![CDATA[J Neurogastroenterol Motil]]></source>
<year>2011</year>
<volume>17</volume>
<page-range>48-53</page-range></nlm-citation>
</ref>
<ref id="B20">
<label>20</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Estremera-Arévalo]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Albéniz]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Rullán]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Areste]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Iglesias]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Vila]]></surname>
<given-names><![CDATA[JJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Efficacy of peroral endoscopic myotomy compared with other invasive treatment options for the different esophageal motor disorders]]></article-title>
<source><![CDATA[Rev Esp Enferm Dig]]></source>
<year>2017</year>
<volume>109</volume>
<page-range>578-86</page-range></nlm-citation>
</ref>
<ref id="B21">
<label>21</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gunasingam]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Perczuk]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Talbot]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Kaffes]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Saxena]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Update on therapeutic interventions for the management of achalasia]]></article-title>
<source><![CDATA[J Gastroenterol Hepatol]]></source>
<year>2016</year>
<volume>31</volume>
<page-range>1422-8</page-range></nlm-citation>
</ref>
<ref id="B22">
<label>22</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pasricha]]></surname>
<given-names><![CDATA[PJ]]></given-names>
</name>
<name>
<surname><![CDATA[Ravich]]></surname>
<given-names><![CDATA[WJ]]></given-names>
</name>
<name>
<surname><![CDATA[Hendrix]]></surname>
<given-names><![CDATA[TR]]></given-names>
</name>
<name>
<surname><![CDATA[Sostre]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Jones]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Kalloo]]></surname>
<given-names><![CDATA[AN]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Treatment of achalasia with intrasphincteric injection of botulinum toxin A pilot trial]]></article-title>
<source><![CDATA[Ann Intern Med]]></source>
<year>1994</year>
<volume>121</volume>
<page-range>590-1</page-range></nlm-citation>
</ref>
<ref id="B23">
<label>23</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Annese]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Bassotti]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Coccia]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Dinelli]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A multicentre randomised study of intrasphincteric botulinum toxin in patients with oesophageal achalasia GISMAD Achalasia Study Group]]></article-title>
<collab>D'Onofrio V.Gatto G</collab>
<source><![CDATA[Gut]]></source>
<year>2000</year>
<volume>46</volume>
<page-range>597-600</page-range></nlm-citation>
</ref>
<ref id="B24">
<label>24</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Schoenberg]]></surname>
<given-names><![CDATA[MB]]></given-names>
</name>
<name>
<surname><![CDATA[Vassiliou]]></surname>
<given-names><![CDATA[MC]]></given-names>
</name>
<name>
<surname><![CDATA[von Renteln]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Achalasia Advances in treatment]]></article-title>
<source><![CDATA[Expert Rev Gastroenterol Hepatol]]></source>
<year>2014</year>
<volume>8</volume>
<page-range>767-73</page-range></nlm-citation>
</ref>
<ref id="B25">
<label>25</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Allaix]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Patti M Endoscopic dilatation, Heller myotomy, and peroral endoscopic myotomy treatment modalities for achalasia]]></article-title>
<source><![CDATA[Surg Clin North Am]]></source>
<year>2015</year>
<volume>95</volume>
<page-range>567-78</page-range></nlm-citation>
</ref>
<ref id="B26">
<label>26</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Boeckxstaens]]></surname>
<given-names><![CDATA[GE]]></given-names>
</name>
<name>
<surname><![CDATA[Annese]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[des Varannes]]></surname>
<given-names><![CDATA[SB]]></given-names>
</name>
<name>
<surname><![CDATA[Chaussade]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Costantini]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Cuttitta]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pneumatic dilation versus laparoscopic Heller's myotomy for idiopathic achalasia]]></article-title>
<source><![CDATA[N Engl J Med]]></source>
<year>2011</year>
<volume>364</volume>
<page-range>1807-16</page-range></nlm-citation>
</ref>
<ref id="B27">
<label>27</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Moonen]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Annese]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Belmans]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Bredenoord]]></surname>
<given-names><![CDATA[AJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Long-term results of the European achalasia trial A multicenter randomised controlled trial comparing pneumatic dilation versus laparoscopic Heller myotomy]]></article-title>
<collab>Bruley des Varannes S.Costantini M</collab>
<source><![CDATA[Gut]]></source>
<year>2016</year>
<volume>65</volume>
<page-range>732-9</page-range></nlm-citation>
</ref>
<ref id="B28">
<label>28</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rohof]]></surname>
<given-names><![CDATA[WO]]></given-names>
</name>
<name>
<surname><![CDATA[Salvador]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Annese]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Outcomes of treatment for achalasia depend on manometric subtype]]></article-title>
<collab>Bruley des Varannes S.Chaussade S.Costantini M</collab>
<source><![CDATA[Gastroenterology]]></source>
<year>2013</year>
<volume>144</volume>
<page-range>718-25</page-range></nlm-citation>
</ref>
<ref id="B29">
<label>29</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Shimi]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Nathanson]]></surname>
<given-names><![CDATA[LK]]></given-names>
</name>
<name>
<surname><![CDATA[Cuschieri]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Laparoscopic cardiomyotomy for achalasia]]></article-title>
<source><![CDATA[J R Coll Physicians Edinb]]></source>
<year>1991</year>
<volume>36</volume>
<page-range>152-4</page-range></nlm-citation>
</ref>
<ref id="B30">
<label>30</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kroch]]></surname>
<given-names><![CDATA[DA]]></given-names>
</name>
<name>
<surname><![CDATA[Grimm]]></surname>
<given-names><![CDATA[IS]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[POEM for achalasia]]></article-title>
<source><![CDATA[Am Surg]]></source>
<year>2018</year>
<volume>84</volume>
<page-range>489-95</page-range></nlm-citation>
</ref>
<ref id="B31">
<label>31</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ortega]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
<name>
<surname><![CDATA[Madureri]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Pérez]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Endoscopic myotomy in the treatment of achalasia]]></article-title>
<source><![CDATA[Gastrointest Endosc]]></source>
<year>1980</year>
<volume>26</volume>
<page-range>8-10</page-range></nlm-citation>
</ref>
<ref id="B32">
<label>32</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pasricha]]></surname>
<given-names><![CDATA[PJ]]></given-names>
</name>
<name>
<surname><![CDATA[Hawari]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Ahmed]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Cotton]]></surname>
<given-names><![CDATA[PB]]></given-names>
</name>
<name>
<surname><![CDATA[Hawes]]></surname>
<given-names><![CDATA[RH]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Submucosal endoscopic esophageal myotomy A novel experimental approach for the treatment of achalasia]]></article-title>
<source><![CDATA[Endoscopy]]></source>
<year>2007</year>
<volume>39</volume>
<page-range>761-4</page-range></nlm-citation>
</ref>
<ref id="B33">
<label>33</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Inoue]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Minami]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Kobayashi]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Sato]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Kaga]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Suzuki]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Peroral endoscopic myotomy (POEM) for esophageal achalasia]]></article-title>
<source><![CDATA[Endoscopy]]></source>
<year>2010</year>
<volume>42</volume>
<page-range>265-71</page-range></nlm-citation>
</ref>
<ref id="B34">
<label>34</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hungness]]></surname>
<given-names><![CDATA[ES]]></given-names>
</name>
<name>
<surname><![CDATA[Jorge]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Per-oral esophageal myotomy Is it a safe and durable procedure for achalasia?]]></article-title>
<source><![CDATA[Adv Surg]]></source>
<year>2017</year>
<volume>51</volume>
<page-range>193-205</page-range></nlm-citation>
</ref>
<ref id="B35">
<label>35</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yang]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Draganov]]></surname>
<given-names><![CDATA[PV]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Expanding role of third space endoscopy in the management of esophageal diseases]]></article-title>
<source><![CDATA[Current Treatment Options in Gastroenterology]]></source>
<year>2018</year>
<volume>16</volume>
<page-range>41-57</page-range></nlm-citation>
</ref>
<ref id="B36">
<label>36</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Patel]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Abbassi-Ghadi]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Markar]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Kumar]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Jethwa]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Zaninotto]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Peroral endoscopic myotomy for the treatment of esophageal achalasia Systematic review and pooled analysis]]></article-title>
<source><![CDATA[Dis Esophagus]]></source>
<year>2016</year>
<volume>29</volume>
<page-range>807-19</page-range></nlm-citation>
</ref>
<ref id="B37">
<label>37</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hungness]]></surname>
<given-names><![CDATA[ES]]></given-names>
</name>
<name>
<surname><![CDATA[Teitelbaum]]></surname>
<given-names><![CDATA[EN]]></given-names>
</name>
<name>
<surname><![CDATA[Santos]]></surname>
<given-names><![CDATA[BF]]></given-names>
</name>
<name>
<surname><![CDATA[Arafat]]></surname>
<given-names><![CDATA[FO]]></given-names>
</name>
<name>
<surname><![CDATA[Pandolfino]]></surname>
<given-names><![CDATA[JE]]></given-names>
</name>
<name>
<surname><![CDATA[Kahrilas]]></surname>
<given-names><![CDATA[PJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Comparison of perioperative outcomes between peroral esophageal myotomy (POEM) and laparoscopic Heller myotomy]]></article-title>
<source><![CDATA[J Gastrointest Surg]]></source>
<year>2013</year>
<volume>17</volume>
<page-range>228-35</page-range></nlm-citation>
</ref>
<ref id="B38">
<label>38</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bhayani]]></surname>
<given-names><![CDATA[NH]]></given-names>
</name>
<name>
<surname><![CDATA[Kurian]]></surname>
<given-names><![CDATA[AA]]></given-names>
</name>
<name>
<surname><![CDATA[Dunst]]></surname>
<given-names><![CDATA[CM]]></given-names>
</name>
<name>
<surname><![CDATA[Sharata]]></surname>
<given-names><![CDATA[AM]]></given-names>
</name>
<name>
<surname><![CDATA[Rieder]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Swanstrom]]></surname>
<given-names><![CDATA[LL]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A comparative study on comprehensive, objective outcomes of laparoscopic Heller myotomy with peroral endoscopic myotomy (POEM) for achalasia]]></article-title>
<source><![CDATA[Ann Surg]]></source>
<year>2014</year>
<volume>259</volume>
<page-range>1098-103</page-range></nlm-citation>
</ref>
<ref id="B39">
<label>39</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ujiki]]></surname>
<given-names><![CDATA[MB]]></given-names>
</name>
<name>
<surname><![CDATA[Yetasook]]></surname>
<given-names><![CDATA[AK]]></given-names>
</name>
<name>
<surname><![CDATA[Zapf]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Linn]]></surname>
<given-names><![CDATA[JG]]></given-names>
</name>
<name>
<surname><![CDATA[Carbray]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
<name>
<surname><![CDATA[Denham]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Peroral endoscopic myotomy A short-term comparison with the standard laparoscopic approach]]></article-title>
<source><![CDATA[Surgery]]></source>
<year>2013</year>
<volume>154</volume>
<page-range>893-7</page-range></nlm-citation>
</ref>
<ref id="B40">
<label>40</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wagner]]></surname>
<given-names><![CDATA[JP]]></given-names>
</name>
<name>
<surname><![CDATA[Sullins]]></surname>
<given-names><![CDATA[VF]]></given-names>
</name>
<name>
<surname><![CDATA[Dunn]]></surname>
<given-names><![CDATA[JC]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A novel in vivo model of permanent intestinal aganglionosis]]></article-title>
<source><![CDATA[J Surg Res]]></source>
<year>2014</year>
<volume>192</volume>
<page-range>27-33</page-range></nlm-citation>
</ref>
<ref id="B41">
<label>41</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Latiano]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[De Giorgio]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Volta]]></surname>
<given-names><![CDATA[U]]></given-names>
</name>
<name>
<surname><![CDATA[Palmieri]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Zagaria]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Stanghellini]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[HLA and enteric antineuronal antibodies in patients with achalasia]]></article-title>
<source><![CDATA[Neurogastroenterol Motil]]></source>
<year>2006</year>
<volume>18</volume>
<page-range>520-5</page-range></nlm-citation>
</ref>
<ref id="B42">
<label>42</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[De la Concha]]></surname>
<given-names><![CDATA[EG]]></given-names>
</name>
<name>
<surname><![CDATA[Fernández-Arquero]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Mendoza]]></surname>
<given-names><![CDATA[JL]]></given-names>
</name>
<name>
<surname><![CDATA[Conejero]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Figueredo]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<name>
<surname><![CDATA[Pérez de la Serna]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Contribution of HLA class II genes to susceptibility in achalasia]]></article-title>
<source><![CDATA[Tissue Antigens.]]></source>
<year>1998</year>
<volume>52</volume>
<page-range>381-4</page-range></nlm-citation>
</ref>
<ref id="B43">
<label>43</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gockel]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Becker]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Wouters]]></surname>
<given-names><![CDATA[MM]]></given-names>
</name>
<name>
<surname><![CDATA[Niebisch]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Gockel]]></surname>
<given-names><![CDATA[HR]]></given-names>
</name>
<name>
<surname><![CDATA[Hess]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Common variants in the HLA-DQ region confer susceptibility to idiopathic achalasia]]></article-title>
<source><![CDATA[Nat Genet]]></source>
<year>2014</year>
<volume>46</volume>
<page-range>901-4</page-range></nlm-citation>
</ref>
<ref id="B44">
<label>44</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sinagra]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Gallo]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Mocciaro]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Stella]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Malizia]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Montalbano]]></surname>
<given-names><![CDATA[JC]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Virus, Helicobacter pylori, and oesophageal achalasia preliminary results from a retrospective case-control study]]></article-title>
<source><![CDATA[Dig Dis Sci]]></source>
<year>2013</year>
<volume>58</volume>
<page-range>1433-4</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
