| Affiliation: | 1. Department of Gastroenterology and Hepatology, Japanese Red Cross Society Kyoto Daiichi Hospital, Kyoto, Japan;2. Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Japan;3. Division of Endoscopy, Shizuoka Cancer Center, Shizuoka, Japan;4. Division of Endoscopy, Saku Central Hospital Advanced Care Center, Nagano, Japan;5. Department of Gastroenterology and Metabolism, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan;6. Department of Gastroenterology, Toranomon Hospital, Tokyo, Japan;7. Department of Endoscopy, Hiroshima City Hospital, Hiroshima, Japan;8. Department of Internal Medicine, Niigata Prefectural Central Hospital, Joetsu, Japan;9. Department of Gastroenterology, Kitakyushu Municipal Medical Center, Kitakyushu, Japan;10. Department of Internal Medicine, Toyama Prefectural Central Hospital, Toyama, Japan;11. Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Sendai, Japan;12. Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan |
