1. Division of Endoscopic Center University of Tsukuba Hospital Tsukuba Japan
2. Department of Gastroenterology University of Tsukuba Tsukuba Japan
3. Department of Gastroenterology Tokyo Metropolitan Bokutoh Hospital Tokyo Japan
4. Department of Gastroenterology and Hepatology Kitano Hospital, Tazuke Kofukai Medical Research Institute Osaka Japan
5. Department of Gastroenterology Graduate School of Medicine, The University of Tokyo Tokyo Japan
6. Department of Gastroenterology Nippon Medical School, Graduate School of Medicine Tokyo Japan
7. Department of Gastroenterology St. Luke's International University Tokyo Japan
8. Department of Gastroenterology Hiroshima City Asa Citizens Hospital Hiroshima Japan
9. Department of Gastroenterology Saga‐Ken Medical Centre Koseikan Saga Japan
10. Division of Gastroenterology and Hepatology, Department of Internal Medicine St Marianna University School of Medicine Kawasaki Japan
11. Department of Gastroenterology and Hepatology, Center for Digestive and Liver Diseases Nara City Hospital Nara Japan
12. Department of Gastroenterology Tokyo Shinagawa Hospital Tokyo Japan
13. Department of Endoscopy Nagoya University Hospital Nagoya Japan
14. Department of Gastroenterology National Hospital Organization Kyoto Medical Center Kyoto Japan
15. Department of Gastroenterology Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital Tokyo Japan
16. Department of Gastroenterology Oita University Oita Japan
17. Department of Gastroenterology Fukuoka University Chikushi Hospital Fukuoka Japan
18. Department of Gastroenterology Chiba Hokusoh Hospital, Nippon Medical School Chiba Japan
19. Department of Gastroenterology Japanese Red Cross Shizuoka Hospital Shizuoka Japan
20. Division of Endoscopy and Ultrasonography, Department of Clinical Pathology and Laboratory Medicine Kawasaki Medical School General Medical Center Okayama Japan
21. Division of Gastroenterology Graduate School of Medical and Dental Sciences, Niigata University Niigata Japan
22. Department of Gastroenterology and Hepatology, Center for Digestive Disease and Division of Endoscopy University of Miyazaki Hospital Miyazaki Japan
23. Department of Gastroenterology Toranomon Hospital Tokyo Japan
24. Department of Emergency Medicine Fujita Health University Hospital Toyoake Japan
25. Emergency and Critical Care Center Saiseikai Yokohama Tobu Hospital Yokohama Japan
26. Department of Gastroenterology Naha City Hospital Naha Japan
27. Department of Internal Medicine Tokyo Saiseikai Central Hospital Tokyo Japan
28. Department of Gastroenterology Shuto General Hospital Yanai‐shi Japan
29. Division of Endoscopy Hirosaki University Hospital Hirosaki Japan
30. Department of Gastroenterology and Hepatology Graduate School of Medical Sciences, Kumamoto University Kumamoto Japan
31. Department of Gastroenterology and Hepatology National Hospital Organization Fukuokahigashi Medical Center Koga Japan
32. Department of Medicine and Clinical Science Graduate School of Medical Sciences, Kyushu University Fukuoka Japan
33. Department of Gastroenterology Fukushima Medical University Fukushima Japan
34. Division of Gastroenterology, Department of Internal Medicine Iwate Medical University Morioka Japan
35. Department of Internal Medicine National Defense Medical College Tokorozawa Japan
36. Division of Endoscopy and Ultrasonography, Department of Clinical Pathology and Laboratory Medicine Kawasaki Medical School Kurashiki Japan
37. Department of Gastroenterology and Hepatology Suita Municipal Hospital Suita Japan
38. Department of Endoscopy University of the Ryukyus Hospital Nishihara Japan
39. Department of Gastroenterology National Hospital Organization Kyushu Medical Center Fukuoka Japan
40. Department of Gastroenterological Endoscopy Fukuoka University Hospital Fukuoka Japan
41. Department of Gastroenterology Kitasato University, School of Medicine Sagamihara Japan
42. Department of Gastroenterology and Neurology Akita University Graduate School of Medicine Akita Japan
43. Digestive and Lifestyle Diseases, and Hygiene and Health Promotion Medicine Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima Japan
44. Department of Gastroenterological Endoscopy Tokyo Medical University Tokyo Japan
45. Department of Gastroenterology and Hepatology National Center for Global Health and Medicine Tokyo Japan