<?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>0120-4157</journal-id>
<journal-title><![CDATA[Biomédica]]></journal-title>
<abbrev-journal-title><![CDATA[Biomédica]]></abbrev-journal-title>
<issn>0120-4157</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Salud]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-41572018000400467</article-id>
<article-id pub-id-type="doi">10.7705/biomedica.v38i4.4183</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Evaluación de la exposición al polvo de carbón y de sílice en sitios de minería subterránea en tres departamentos de Colombia]]></article-title>
<article-title xml:lang="en"><![CDATA[Evaluation of the exposure to coal dust and prevalence of pneumoconiosis in underground mining in three Colombian departments]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Varona]]></surname>
<given-names><![CDATA[Marcela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ibáñez-Pinilla]]></surname>
<given-names><![CDATA[Milcíades]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Briceño]]></surname>
<given-names><![CDATA[Leonardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Groot]]></surname>
<given-names><![CDATA[Helena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Narváez]]></surname>
<given-names><![CDATA[Diana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Palma]]></surname>
<given-names><![CDATA[Marién]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Herrera]]></surname>
<given-names><![CDATA[Diego]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Morgan]]></surname>
<given-names><![CDATA[Gloria]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad del Rosario Escuela de Medicina y Ciencias de la Salud ]]></institution>
<addr-line><![CDATA[Bogotá D.C]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de los Andes Laboratorio de Genética Humana ]]></institution>
<addr-line><![CDATA[Bogotá D.C]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Nacional de Salud Grupo de Salud Ambiental y Laboral ]]></institution>
<addr-line><![CDATA[Bogotá D.C]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Positiva Compañía de Seguros S.A  ]]></institution>
<addr-line><![CDATA[Bogotá D.C]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<volume>38</volume>
<numero>4</numero>
<fpage>467</fpage>
<lpage>478</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-41572018000400467&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-41572018000400467&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-41572018000400467&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción. La neumoconiosis de mineros del carbón es una enfermedad crónica e irreversible que se considera un problema de salud pública.  Objetivo. Estimar la prevalencia de neumoconiosis y sus factores asociados en mineros de carbón de Boyacá, Cundinamarca y Norte de Santander.  Materiales y métodos. Se hizo un estudio de corte transversal en 476 mineros. Se les hizo valoración médica, se tomaron radiografías de tórax siguiendo los criterios de la Organización Internacional del Trabajo, así como espirometrías, y se identificaron los polimorfismos de la glutatión S-transferasa y de las enzimas de reparación. Las asociaciones entre las condiciones ocupacionales y de la empresa con la neumoconiosis, se estudiaron usando modelos de regresión de Cox.  Resultados. En 31 empresas se hicieron 479 monitorizaciones ambientales y se evaluaron 476 trabajadores cuyo tiempo de trabajo fluctuaba entre 10 y 57 años. La prevalencia de la neumoconiosis fue de 33,8 % (IC95% 27,0-41,3). En el modelo de regresión multivariado de Cox, con tiempo de riesgo constante para la neumoconiosis, esta se asoció significativamente con el trabajo en empresas medianas (razón de prevalencias, RP=2,00; IC95% 0,995- 2,690; p=0,052), con un nivel alto de exposición al polvo de carbón según el índice de exposición (RP=2,055; IC95% 1,043-4,048; p=0,038), y una antigüedad de 25 años o más (para 25,0 a 29,9 años: RP=2,199; IC95% 1,449-3,338; p=0,001).  Conclusiones. La prevalencia de la neumoconiosis fue muy alta y se asoció a la exposición a altos niveles de polvo de carbón, a una exposición laboral mayor o igual a 25 años y al trabajo en empresas medianas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction: Coal workers&#8217; pneumoconiosis is a chronic and irreversible disease representing a public health problem.  Objective: To estimate the prevalence of pneumoconiosis and its associated factors among underground coal miners in the Colombian departments of Boyacá, Cundinamarca and Norte de Santander.  Materials and methods: We conducted a cross-sectional study of 476 miners to measure the prevalence of pneumoconiosis and its associated factors such as coal dust and silica levels, as well as the occupational conditions. The medical assessment and a chest x-ray were performed according to the International Labor Organization criteria, along with spirometry and the identification of glutathione S-transferase and repair enzyme polymorphisms. The associations were explored using Cox regression models.  Results: We performed a total of 479 environmental monitoring sessions in 31 companies and we evaluated 476 workers with 10 to 57 years of mining work experience. The prevalence of pneumoconiosis was 33.8% (95% CI: 27.0 - 41.3%). In the Cox multivariate regression model with a constant risk time, pneumoconiosis was significantly associated with working in medium-sized companies (PR=2.00, 95% CI: 0.995 - 2.690; p=0.052), the level of severe exposure to coal dust (PR=2.055, 95% CI: 1.043 - 4.048; p=0.038), and working in underground mining for 25 years or more (for those with 25.0-29.9 years: PR=2.199, 95% CI: 1.449 - 3.338; p=0.001).  Conclusions: The prevalence of pneumoconiosis was very high and was found to be associated with severe exposure to coal dust, work exposure for 25 years or more and working in medium-sized enterprises.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[neumoconiosis]]></kwd>
<kwd lng="es"><![CDATA[minas de carbón]]></kwd>
<kwd lng="es"><![CDATA[exposición profesional]]></kwd>
<kwd lng="es"><![CDATA[genotoxicidad]]></kwd>
<kwd lng="es"><![CDATA[prevención de enfermedades]]></kwd>
<kwd lng="es"><![CDATA[sílice libre]]></kwd>
<kwd lng="en"><![CDATA[Pneumoconiosis]]></kwd>
<kwd lng="en"><![CDATA[coal mining]]></kwd>
<kwd lng="en"><![CDATA[occupational exposure]]></kwd>
<kwd lng="en"><![CDATA[genotoxicity]]></kwd>
<kwd lng="en"><![CDATA[disease prevention]]></kwd>
<kwd lng="en"><![CDATA[free silica]]></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[Fishwick]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Barber]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pneumoconiosis]]></article-title>
<source><![CDATA[Medicine]]></source>
<year>2012</year>
<volume>40</volume>
<page-range>310-3</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="">
<collab>Unidad de Planeación Minero Energético</collab>
<source><![CDATA[Zonas carboníferas de Colombia]]></source>
<year></year>
<publisher-loc><![CDATA[Bogotá ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bernales]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Alcalino]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Solís]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Situación de la exposición laboral a sílice en Chile]]></article-title>
<source><![CDATA[Ciencia y Trabajo]]></source>
<year>2008</year>
<volume>20</volume>
<page-range>11-7</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="book">
<collab>Ministerio de la Protección Social</collab>
<source><![CDATA[Guía de atención integral de salud ocupacional basada en la evidencia para neumoconiosis (silicosis, neumoconiosis del minero de carbón y asbestosis)]]></source>
<year>2007</year>
<page-range>75-93</page-range><publisher-loc><![CDATA[Bogotá, D.C. ]]></publisher-loc>
<publisher-name><![CDATA[Imprenta Nacional de Colombia]]></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[Zhai]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Ge]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
<name>
<surname><![CDATA[Yang]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Huang]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Wu]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Genetic polymorphisms of MnSOD, GSTM1, GSTT1, and OGG1 in coal workers&#8217; pneumoconiosis]]></article-title>
<source><![CDATA[J Occup Environ Med]]></source>
<year>2002</year>
<volume>44</volume>
<page-range>372-7</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="book">
<collab>Organización Mundial de la Salud</collab>
<source><![CDATA[Informe sobre la salud en el mundo 2007: un porvenir más seguro. Protección de la salud pública mundial en el siglo 21]]></source>
<year>2007</year>
<page-range>7</page-range><publisher-loc><![CDATA[Ginebra ]]></publisher-loc>
<publisher-name><![CDATA[OMS]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chong]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Lee]]></surname>
<given-names><![CDATA[KS]]></given-names>
</name>
<name>
<surname><![CDATA[Chung]]></surname>
<given-names><![CDATA[MJ]]></given-names>
</name>
<name>
<surname><![CDATA[Han]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Kwon]]></surname>
<given-names><![CDATA[OJ]]></given-names>
</name>
<name>
<surname><![CDATA[Kim]]></surname>
<given-names><![CDATA[TS]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pneumoconiosis: Comparison of imaging and pathologic findings]]></article-title>
<source><![CDATA[Radiographics]]></source>
<year>2006</year>
<volume>26</volume>
<page-range>59-77</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[Yucesoy]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Luster]]></surname>
<given-names><![CDATA[MI]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Genetic susceptibility in neumoconiosis]]></article-title>
<source><![CDATA[Toxicol Lett]]></source>
<year>2007</year>
<volume>168</volume>
<page-range>249-54</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[Costa]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Pasquale]]></surname>
<given-names><![CDATA[RD]]></given-names>
</name>
<name>
<surname><![CDATA[Silvari]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Barbaro]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Catania]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[In vitro evaluation of oxidative damage from organic solvent vapours on human skin]]></article-title>
<source><![CDATA[Toxicol In vitro]]></source>
<year>2006</year>
<volume>20</volume>
<page-range>324-31</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[Heuser]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluation of genetic damage in Brazilian footwear workers. Biomarkers of exposure, effect and susceptibility]]></article-title>
<source><![CDATA[Toxicology]]></source>
<year>2007</year>
<volume>10</volume>
<page-range>1-13</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[Borm]]></surname>
<given-names><![CDATA[PJ]]></given-names>
</name>
<name>
<surname><![CDATA[Schins]]></surname>
<given-names><![CDATA[RP]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Genotype and phenotype in susceptibility to coal workers&#8217; pneumoconiosis. The use of cytokines in perspective]]></article-title>
<source><![CDATA[Eur Respir J Suppl]]></source>
<year>2001</year>
<volume>32</volume>
<page-range>127-33s</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[Li]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Guan]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[MX]]></given-names>
</name>
<name>
<surname><![CDATA[Zhong]]></surname>
<given-names><![CDATA[ZY]]></given-names>
</name>
<name>
<surname><![CDATA[Qian]]></surname>
<given-names><![CDATA[CY]]></given-names>
</name>
<name>
<surname><![CDATA[Yang]]></surname>
<given-names><![CDATA[XQ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Genetic polymorphism of DNA base-excision repair genes (APE1, OGG1 and XRCC1) and their correlation with risk of lung cancer in a Chinese population]]></article-title>
<source><![CDATA[Arch Med Res]]></source>
<year>2011</year>
<volume>42</volume>
<page-range>226-34</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[Wang]]></surname>
<given-names><![CDATA[ML]]></given-names>
</name>
<name>
<surname><![CDATA[Beeckman-Wagner]]></surname>
<given-names><![CDATA[LA]]></given-names>
</name>
<name>
<surname><![CDATA[Wolfe]]></surname>
<given-names><![CDATA[AL]]></given-names>
</name>
<name>
<surname><![CDATA[Syamlal]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Petsonk]]></surname>
<given-names><![CDATA[EL]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Lung-function impairment among US underground coal miners, 2005 to 2009: Geographic patterns and association with coal workers&#8217; pneumoconiosis]]></article-title>
<source><![CDATA[J Occup Environ Med]]></source>
<year>2013</year>
<volume>55</volume>
<page-range>846-50</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[Mo]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Au]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Su]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Prevalence of coal worker´s pneumoconiosis in China: A systematic analysis of 2001-2011]]></article-title>
<source><![CDATA[Int J Hyg Environ Health]]></source>
<year>2014</year>
<volume>217</volume>
<page-range>46-51</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[Laney]]></surname>
<given-names><![CDATA[AS]]></given-names>
</name>
<name>
<surname><![CDATA[Petsonk]]></surname>
<given-names><![CDATA[EL]]></given-names>
</name>
<name>
<surname><![CDATA[Hale]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
<name>
<surname><![CDATA[Wolfe]]></surname>
<given-names><![CDATA[AL]]></given-names>
</name>
<name>
<surname><![CDATA[Attfield]]></surname>
<given-names><![CDATA[MD]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Potential determinants of coal workers&#8217; pneumoconiosis, advanced pneumoconiosis, and progressive massive fibrosis among underground coal miners in the United States, 2005-2009]]></article-title>
<source><![CDATA[Am J Public Health]]></source>
<year>2012</year>
<volume>102</volume>
<numero>^s2</numero>
<issue>^s2</issue>
<supplement>2</supplement>
<page-range>279-83</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[Rendón]]></surname>
<given-names><![CDATA[ID]]></given-names>
</name>
<name>
<surname><![CDATA[Mazuera]]></surname>
<given-names><![CDATA[ME]]></given-names>
</name>
<name>
<surname><![CDATA[Grisales]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Neumoconiosis en la minería subterránea, Amagá, 1995]]></article-title>
<source><![CDATA[Revista Facultad Nacional de Salud Pública]]></source>
<year>1997</year>
<volume>14</volume>
<page-range>46-67</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[Orduz]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Neumoconiosis en Colombia, situación en Antioquia. Presentación de 189 casos]]></article-title>
<source><![CDATA[Revista Colombiana de Neumología]]></source>
<year>2000</year>
<volume>13</volume>
<page-range>224-5</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="">
<collab>Ministerio de la Protección Social</collab>
<source><![CDATA[Informe de enfermedad profesional en Colombia]]></source>
<year>2007</year>
</nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[García-Río]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Calle]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Burgos]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Casan]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[del Campo]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Galdiz]]></surname>
<given-names><![CDATA[JB]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Espirometría]]></article-title>
<source><![CDATA[Arch Bronconeumol]]></source>
<year>2013</year>
<volume>49</volume>
<page-range>388-401</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[Barros]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Hirakata]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Alternatives for logistic regression in cross-sectional studies: An empirical comparison of models that directly estimate the prevalence ratio]]></article-title>
<source><![CDATA[BMC Med Res Methodol]]></source>
<year>2003</year>
<volume>3</volume>
<page-range>21</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[Wade]]></surname>
<given-names><![CDATA[WA]]></given-names>
</name>
<name>
<surname><![CDATA[Petsonk]]></surname>
<given-names><![CDATA[EL]]></given-names>
</name>
<name>
<surname><![CDATA[Young]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Mogri]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Severe occupational pneumoconiosis among West Virginian coal miners: One hundred thirty-eight cases of progressive massive fibrosis compensated between 2000 and 2009]]></article-title>
<source><![CDATA[Chest]]></source>
<year>2011</year>
<volume>139</volume>
<page-range>1458-62</page-range></nlm-citation>
</ref>
<ref id="B22">
<label>22</label><nlm-citation citation-type="book">
<collab>Ministerio de Salud</collab>
<source><![CDATA[Indicadores básicos 2012 - Situación de salud en Colombia]]></source>
<year>2012</year>
<volume>61</volume>
<publisher-loc><![CDATA[Bogotá, D.C. ]]></publisher-loc>
<publisher-name><![CDATA[Minsalud]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B23">
<label>23</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Laney]]></surname>
<given-names><![CDATA[AS]]></given-names>
</name>
<name>
<surname><![CDATA[Attfield]]></surname>
<given-names><![CDATA[MD]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Coal workers&#8217; pneumoconiosis and progressive massive fibrosis are increasingly more prevalent among workers in small underground coal mines in the United States]]></article-title>
<source><![CDATA[Occup Environ Med]]></source>
<year>2010</year>
<volume>67</volume>
<page-range>428-31</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[McConnochie]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Green]]></surname>
<given-names><![CDATA[FH]]></given-names>
</name>
<name>
<surname><![CDATA[Vallyathan]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Wagner]]></surname>
<given-names><![CDATA[JC]]></given-names>
</name>
<name>
<surname><![CDATA[Seal]]></surname>
<given-names><![CDATA[RM]]></given-names>
</name>
<name>
<surname><![CDATA[Lyons]]></surname>
<given-names><![CDATA[JP]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Interstitial fibrosis in coal workers: Experience in Wales and West Virginia]]></article-title>
<source><![CDATA[Ann Occup Hyg]]></source>
<year>1988</year>
<volume>32</volume>
<page-range>553-60</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[Balmes]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Becklake]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Blanc]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Henneberger]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Kreiss]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Mapp]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[American Thoracic Society statement: Occupational contribution to the burden of airway disease]]></article-title>
<source><![CDATA[Am J Respir Crit Care Med]]></source>
<year>2003</year>
<volume>167</volume>
<page-range>787-97</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[Suarthana]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Laney]]></surname>
<given-names><![CDATA[AS]]></given-names>
</name>
<name>
<surname><![CDATA[Storey]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Hale]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
<name>
<surname><![CDATA[Attfield]]></surname>
<given-names><![CDATA[MD]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Coal workers&#8217; pneumoconiosis in the United States: Regional differences 40 years after implementation of the 1969 Federal Coal Mine Health and Safety Act]]></article-title>
<source><![CDATA[Occup Environ Med]]></source>
<year>2011</year>
<volume>68</volume>
<page-range>908-13</page-range></nlm-citation>
</ref>
<ref id="B27">
<label>27</label><nlm-citation citation-type="book">
<collab>Centers for Disease Control and Prevention</collab>
<source><![CDATA[Coal workers&#8217; health surveillance program - data query system]]></source>
<year></year>
<publisher-name><![CDATA[NIOSH]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B28">
<label>28</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[GT]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[XJ]]></given-names>
</name>
<name>
<surname><![CDATA[Wei]]></surname>
<given-names><![CDATA[YH]]></given-names>
</name>
<name>
<surname><![CDATA[Wei]]></surname>
<given-names><![CDATA[WL]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[XH]]></given-names>
</name>
<name>
<surname><![CDATA[Yuan]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Epidemiological analysis of pneumoconiosis in the Xinjiang Uygur Autonomous Region and cases reported by the Urumqi Railway Bureau]]></article-title>
<source><![CDATA[Genet Mol Res]]></source>
<year>2015</year>
<volume>14</volume>
<page-range>1612-23</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[Xia]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Shi]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Xiang]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Bi]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Prevalence of pneumoconiosis in Hubei, China from 2008 to 2013]]></article-title>
<source><![CDATA[Int J Environ Res Public Health]]></source>
<year>2014</year>
<volume>11</volume>
<page-range>8612-21</page-range></nlm-citation>
</ref>
<ref id="B30">
<label>30</label><nlm-citation citation-type="">
<collab>Ministerio de Minas y Energía</collab>
<source><![CDATA[Censo Departamental Minero, Colombia]]></source>
<year>2012</year>
</nlm-citation>
</ref>
<ref id="B31">
<label>31</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Zheng]]></surname>
<given-names><![CDATA[YD]]></given-names>
</name>
<name>
<surname><![CDATA[DU]]></surname>
<given-names><![CDATA[XY]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[SY]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Analyses on the characteristics and the trends of pneumoconiosis notified between 1997 and 2009, in China]]></article-title>
<source><![CDATA[Zhonghua Lao Dong Wei Sheng Zhi Ye Bing ZaZhi]]></source>
<year>2013</year>
<volume>31</volume>
<page-range>321-34</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[Perret]]></surname>
<given-names><![CDATA[JL]]></given-names>
</name>
<name>
<surname><![CDATA[Plush]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Lachapelle]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Hinks]]></surname>
<given-names><![CDATA[TS]]></given-names>
</name>
<name>
<surname><![CDATA[Walter]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Clarke]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Coal mine dust lung disease in the modern era]]></article-title>
<source><![CDATA[Respirology]]></source>
<year>2017</year>
<volume>22</volume>
<page-range>662-70</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
