| Affiliation: | 1. Department of Gastroenterology, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia;2. Department of Medicine, Gastroenterology and Hepatology Section, Baylor College of Medicine, Houston, TX, USA;3. Department of Environmental and Preventive Medicine, Oita University Faculty of Medicine, Yufu, Oita, Japan;4. Department of Molecular Pathology, Oita University faculty of Medicine, Yufu, Oita, Japan;5. Department of Gastroenterology, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia Endoscopy Unit, Mongolia—Japan Hospital, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia |
