?:authorAffiliation
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[\'Health Services of the State of Nuevo Leon, Ministry of Health, Monterrey, Nuevo León, Mexico.\', \'Department of Histology, School of Medicine, Autonomous University of Nuevo Leon, Monterrey, Nuevo León, Mexico.\', \'Epidemiologic and Health Services Research Unit, Mexican Institute of Social Security, Monterrey, Nuevo León, Mexico.\', \'School of Public Health and Nutrition, Autonomous University of Nuevo Leon Monterrey, Monterrey, Nuevo León, Mexico.\']
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