1. Department of Gastroenterology Japanese Red Cross Kyoto Daini Hospital Kyoto Japan
2. Department of Gastroenterology and Hepatology Musashino Red Cross Hospital Tokyo Japan
3. Department of Gastroenterology Japanese Red Cross Okayama Hospital Okayama Japan
4. Department of Gastroenterology Hiroshima Red Cross Hospital & Atomic‐bomb Survivors Hospital Hiroshima Japan
5. Department of Gastroenterology Japanese Red Cross Asahikawa Hospital Asahikawa Japan
6. Department of Gastroenterology Ishinomaki Red Cross Hospital Ishinomaki Japan
7. Center for Liver‐Biliary‐Pancreatic Disease Matsuyama Red Cross Hospital Matsuyama Japan
8. Department of Gastroenterology and Hepatology Ise Red Cross Hospital Ise Japan
9. Department of Gastroenterology Japanese Red Cross Kyoto Daiichi Hospital Kyoto Japan
10. Department of Gastroenterology Tottori Red Cross Hospital Tottori Japan
11. Department of Gastroenterology Otsu Red Cross Hospital Otsu Japan
12. Department of Gastroenterology and Hepatology Takamatsu Red Cross Hospital Takamatsu Japan
13. Department of Gastroenterology Matsue Red Cross Hospital Matsue Japan
14. Department of Gastroenterology Oita Red Cross Hospital Oita Japan
15. Department of Gastroenterology and Hepatology Osaka Red Cross Hospital Osaka Japan
16. Department of Internal Medicine Karatsu Red Cross Hospital Saga Japan
17. Department of Gastroenterology Japanese Red Cross Gifu Hospital Gifu Japan
18. Department of Gastroenterology Japanese Red Cross Nagasaki Genbaku Hospital Nagasaki Japan
19. Department of Gastroenterology Japanese Red Cross Medical Center Tokyo Japan
20. Department of Gastroenterology Hatano Red Cross Hospital Hatano Japan
21. Department of Gastroenterology Masuda Red Cross Hospital Masuda Japan
22. Department of Gastroenterology Fukaya Red Cross Hospital Saitama Japan
23. Department of Gastroenterology Japanese Red Cross Akita Hospital Akita Japan
24. Department of Gastroenterology Toyama Red Cross Hospital Toyama Japan