?:authorAffiliation
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[\'Digestive Disease Research Center, Digestive Disease Research Institute, Tehran University of Medical Sciences, Tehran, Iran.\', \'Gut and Liver Research Center, Mazandaran University of Medical Sciences, Sari, Iran.\', \'Gastrointestinal and Liver Diseases Research Center, Guilan University of Medical Sciences, Rasht, Iran.\', \'Gastroenterology and Hematology Department, Faculty of Medicine, Ghaem Hospital, Mashhad, Iran.\', \'Gastroenterology and Hepatology Diseases Research Center, Qom University of Medical Science, Qom, Iran.\', \'Gastrointestinal and Liver Diseases Research Center, Iran University of Medical Sciences, Tehran, Iran.\', \'Hematology, Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran.\', \'Department of Radiology, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran.\', \'Department of Epidemiology and Statistics, Faculty of Health Sciences, Neyshabur University of Medical Sciences, Neyshabur, Iran.\', \'The Henry D. Janowitz Division of Gastroenterology Icahn School of Medicine at Mount Sinai, New York, USA.\']
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