?:authorAffiliation
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[\'Endoscopy Department, Hospital de Especialidades, Centro Médico Nacional Siglo XXI, Mexican Social Security Institute, Mexico City, Mexico murcio@hotmail.com felixtelleza@gmail.com.\', \'Endoscopy Department, Hospital de Especialidades, Centro Médico Nacional Siglo XXI, Mexican Social Security Institute, Mexico City, Mexico.\', \'Endoscopy Department, Hospital Israelita Albert Einstein, São Paulo, Brazil.\', \'Gastrointestinal Endoscopy Department, National Institute of Medical Sciences and Nutrition Salvador Zubiran, Tlalpan, Mexico.\', \'Digestive Endoscopy Department, Spanish First Health Association, Montevideo, Uruguay.\', \'Gastrointestinal Endoscopy Department, National Institute of Medical Sciences and Nutrition Salvador Zubiran, Tlalpan, Mexico murcio@hotmail.com felixtelleza@gmail.com.\']
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