<?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>0120-3347</journal-id>
<journal-title><![CDATA[Colombian Journal of Anestesiology]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. colomb. anestesiol.]]></abbrev-journal-title>
<issn>0120-3347</issn>
<publisher>
<publisher-name><![CDATA[SCARE-Sociedad Colombiana de Anestesiología y Reanimación]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-33472021000400004</article-id>
<article-id pub-id-type="doi">10.5554/22562087.e998</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Anesthesia for cesarean section and SARS Cov-2: Observational study in Peru]]></article-title>
<article-title xml:lang="es"><![CDATA[Anestesia para cesárea en gestantes y SARS-CoV-2: estudio observacional en Perú]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Huayanay-Bernabé]]></surname>
<given-names><![CDATA[Marleny Elizabeth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Calderón-Lozano]]></surname>
<given-names><![CDATA[Marjorie Lisseth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moreno-Gonzáles]]></surname>
<given-names><![CDATA[Álvaro Renato]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vásquez-Rojas]]></surname>
<given-names><![CDATA[José Gunther]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional Materno Perinatal  ]]></institution>
<addr-line><![CDATA[Lima ]]></addr-line>
<country>Perú</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>49</volume>
<numero>4</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-33472021000400004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-33472021000400004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-33472021000400004&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction Information regarding the clinical behavior and the anesthetic and perioperative management in pregnant patients with SARS-CoV-2 is starting to appear in the literature in the form of case reports or case series. However, strong evidence and recommendations are still limited.  Objective To describe the clinical characteristics, the results of anesthetic and perioperative management, and complications in seroprevalent pregnant women for SARS-CoV-2 infection, delivered by cesarean section.  Methodology Observational study in which 107 clinical records of pregnant women who were seroprevalent for SARS-CoV-2 infection were reviewed and analyzed between April and June, 2020. Demographic, clinical and serological data were collected, as well as data on the anesthetic technique and intraoperative and postoperative complications.  Results Of the 107 pregnant women with SARS-CoV-2 infection, 99 (92.52%) were asymptomatic and 8 (7.48%) had mild symptoms. The most frequent reasons for cesarean section were cephalo-pelvic disproportion in 20 (18.68%), previous cesarean section in 20 (18.68%) and non-reassuring fetal status in 14 (13.08%). Anesthesia technique was neuraxial in all cases, with spinal used in 100 (93.5%), combined spinal-epidural in 4 (3.7%) and epidural catheter in 3 (2.8%) patients. No deaths had occurred until the third postoperative day of follow-up.  Conclusions The majority of pregnant women with SARS-CoV-2 infection are asymptomatic. In this work, spinal, combined spinal-epidural and epidural neuroxial anesthesia techniques were shown to be effective and safe for these patients and their newborn babies.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción La información del comportamiento clínico, manejo anestésico y perioperatorio en gestantes con SARS-CoV-2 empieza a aparecer en la literatura mediante reportes de casos o serie de casos. Aún son limitadas la evidencia contundente y las recomendaciones.  Objetivo Describir las características clínicas, resultados del manejo anestésico, perioperatorio y complicaciones en gestantes seroprevalentes para infección por SARS-CoV-2, cuyo parto fue por cesárea.  Metodología Estudio observacional en el cual se revisaron y analizaron 107 historias clínicas de gestantes seroprevalentes para infección por SARS-CoV-2, de abril a junio del 2020. Se recolectaron datos demográficos, clínicos, serología, técnica anestésica y complicaciones intra y postoperatorias.  Resultados De las 107 gestantes con infección por SARS-CoV-2, 99 (92,52 %) fueron asintomáticas y 8 (7,48 %) presentaron síntomas leves. Los motivos más frecuentes de cesárea fueron: desproporción céfalo-pélvica 20 (18,68 %), cesárea previa 20 (18,68 %) y estado fetal no tranquilizador 14 (13,08 %). La técnica anestésica fue neuro axial en su totalidad, espinal en 100 (93,5 %), combinada espinal-epidural en 4 (3,7 %) y epidural con catéter en 3 (2,8 %) pacientes. No se registraron muertes hasta el tercer día postoperatorio de seguimiento.  Conclusiones Las gestantes con infección por SARS-CoV-2 presentan -en su mayoría- infecciones asintomáticas. En este trabajo, la anestesia neuro axial: espinal, combinada espinal-epidural y epidural, se presentan como técnicas efectivas y seguras para estas pacientes y sus recién nacidos.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[COVID-19]]></kwd>
<kwd lng="en"><![CDATA[Neuraxial anesthesia]]></kwd>
<kwd lng="en"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="en"><![CDATA[Pregnancy]]></kwd>
<kwd lng="en"><![CDATA[Cesarean section]]></kwd>
<kwd lng="es"><![CDATA[COVID-19]]></kwd>
<kwd lng="es"><![CDATA[Anestesia neuro axial]]></kwd>
<kwd lng="es"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="es"><![CDATA[Embarazo]]></kwd>
<kwd lng="es"><![CDATA[Cesárea]]></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[Ashokka]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Loh]]></surname>
<given-names><![CDATA[MH]]></given-names>
</name>
<name>
<surname><![CDATA[Tan]]></surname>
<given-names><![CDATA[CH]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Care of the pregnant woman with coronavirus disease 2019 in labor and delivery: anesthesia, emergency cesarean delivery, differential diagnosis in the acutely ill parturient, care of the newborn, and protection of the healthcare personnel]]></article-title>
<source><![CDATA[Am J Obstet Gynecol]]></source>
<year>2020</year>
<volume>223</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>66-74</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[Omer]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Ali]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Din Babar]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Preventive measures and management of COVID-19 in pregnancy]]></article-title>
<source><![CDATA[Drugs Ther Perspect]]></source>
<year>2020</year>
<page-range>1-4</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[Knight]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Bunch]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Vousden]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Morris]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Simpson]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Gale]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Characteristics and outcomes of pregnant women admitted to hospital with confirmed SARS-CoV-2 infection in UK: national population based cohort study]]></article-title>
<source><![CDATA[BMJ]]></source>
<year>2020</year>
<volume>369</volume>
<page-range>M2107</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Khalil]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Kalafat]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Benlioglu]]></surname>
<given-names><![CDATA[O'Brien P]]></given-names>
</name>
<name>
<surname><![CDATA[Morris]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Draycott]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[SARS-CoV-2 infection in pregnancy: A systematic review and meta-analysis of clinical features and pregnancy outcomes]]></article-title>
<source><![CDATA[E Clinical Medicine]]></source>
<year>2020</year>
<volume>25</volume>
</nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yj]]></surname>
<given-names><![CDATA[Gao]]></given-names>
</name>
<name>
<surname><![CDATA[Ye]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Js]]></surname>
<given-names><![CDATA[Zhang]]></given-names>
</name>
<name>
<surname><![CDATA[Yx]]></surname>
<given-names><![CDATA[Yin]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Yu]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Clinical features and outcomes of pregnant women with COVID-19: a systematic review and meta-analysis]]></article-title>
<source><![CDATA[BMC Infectious Diseases]]></source>
<year>2020</year>
<volume>20</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>564</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[Flannery]]></surname>
<given-names><![CDATA[DD]]></given-names>
</name>
<name>
<surname><![CDATA[Gouma]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Dhudasia]]></surname>
<given-names><![CDATA[MB]]></given-names>
</name>
<name>
<surname><![CDATA[Mukhopadhyay]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Pfeifer]]></surname>
<given-names><![CDATA[MR]]></given-names>
</name>
<name>
<surname><![CDATA[Wood-ford]]></surname>
<given-names><![CDATA[EC]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[SARS-CoV-2 seroprevalence among parturient women]]></article-title>
<source><![CDATA[MedRxiv Prepr Serv Health Sci]]></source>
<year>2020</year>
</nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vidal-Anzardo]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Solis]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Solari]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Minaya]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Ayala-Quintanilla]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Astete-Cornejo]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluación en condiciones de campo de una prueba rápida para detección de anticuerpos IgM e IgG contra SARS-CoV-2]]></article-title>
<source><![CDATA[Rev Peru Med Exp Salud Pública]]></source>
<year>2020</year>
<volume>37</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>203-9</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[Cao D]]></surname>
<given-names><![CDATA[Yina H]]></given-names>
</name>
<name>
<surname><![CDATA[Chena]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Tanga]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Penga]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Lib]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Clinical analysis of ten pregnant women with COVID-19 in Wuhan, China: A retrospective study]]></article-title>
<source><![CDATA[Int J of Infect Dis]]></source>
<year>2020</year>
<volume>95</volume>
<page-range>294-300</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[Chen]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Huang]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Safety and efficacy of different anesthetic regimens for parturients with COVID-19 undergoing Cesarean delivery: a case series of 17 patients]]></article-title>
<source><![CDATA[Can J Anaesth]]></source>
<year>2020</year>
<volume>67</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>655-63</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[Turan]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Hakim]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Dashraath]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Jeslyn]]></surname>
<given-names><![CDATA[WJL]]></given-names>
</name>
<name>
<surname><![CDATA[Wright]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Abdul-Kadir]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Clinical characteristics, prognostic factors, and maternal and neonatal outcomes of SARS-CoV-2 infection among hospitalized pregnant women: A systematic review]]></article-title>
<source><![CDATA[Int J Gynaecol Obstet]]></source>
<year>2020</year>
<volume>151</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>7-16</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[Zhong Q Liu]]></surname>
<given-names><![CDATA[YY]]></given-names>
</name>
<name>
<surname><![CDATA[Luo Q Zou]]></surname>
<given-names><![CDATA[YF]]></given-names>
</name>
<name>
<surname><![CDATA[Jiang]]></surname>
<given-names><![CDATA[HX]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Spinal anaesthesia for patients with coronavirus disease 2019 and possible transmission rates in anaesthetists: retrospective, single-centre, observational cohort study]]></article-title>
<source><![CDATA[Br J Anaesth]]></source>
<year>2020</year>
<volume>124</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>670-5</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[Yue]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Han]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Li Q Zhong]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Wan]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Anesthesia and infection control in cesarean section of pregnant women with CO-VID-19 infection: A descriptive study]]></article-title>
<source><![CDATA[J Clin Anesth]]></source>
<year>2020</year>
<volume>66</volume>
<page-range>109908</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[Bauer]]></surname>
<given-names><![CDATA[ME]]></given-names>
</name>
<name>
<surname><![CDATA[Bernstein]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Dinges]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Obstetric anesthesia during the COVID-19 pandemic]]></article-title>
<source><![CDATA[Anesth Analg]]></source>
<year>2020</year>
<volume>131</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>7-15</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[Landau]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Bernstein]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Mhyre]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Lessons learned from first COVID-19 cases in the United States]]></article-title>
<source><![CDATA[Anesth Analg]]></source>
<year>2020</year>
<volume>131</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>e25-6</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[Zaigham]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Andersson]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Maternal and perinatal outcomes with COVID-19: A systematic review of 108 pregnancies]]></article-title>
<source><![CDATA[Acta Obstet Gynecol Scand]]></source>
<year>2020</year>
<volume>99</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>823-9</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[Allotey]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Stallings]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Bonet]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Yap]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Chatterjee]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Kew]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Clinical manifestations, risk factors, and maternal and perinatal outcomes of coronavirus disease 2019 in pregnancy: living systematic review and meta-analysis]]></article-title>
<source><![CDATA[BMJ]]></source>
<year>2020</year>
<volume>370</volume>
<page-range>m3320</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[D'Souza]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Malhamé]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Teshler]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Acharya]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Hunt]]></surname>
<given-names><![CDATA[BJ]]></given-names>
</name>
<name>
<surname><![CDATA[McLintock]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A critical review of the pathophysiology of thrombotic complications and clinical practice recommendations for thromboprophylaxis in pregnant patients with COVID-19]]></article-title>
<source><![CDATA[Acta Obstet Gynecol Scand]]></source>
<year>2020</year>
<volume>99</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>1110-20</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="">
<collab>PAHO</collab>
<source><![CDATA[Laboratory guidelines for the detection and diagnosis of COVID-19 virus infection]]></source>
<year>2020</year>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
