1. Department of Gastroenterology and Hepatology Musashino Red Cross Hospital Tokyo Japan
2. Department of Gastroenterology Hiroshima Red Cross Hospital and Atomic Bomb Survivors' Hospital Hiroshima Japan
3. Department of Gastroenterology Asahikawa Red Cross Hospital Asahikawa Japan
4. Center for Liver‐Biliary‐Pancreatic Disease Matsuyama Red Cross Hospital Matsuyama Japan
5. Department of Gastroenterology Ishinomaki Red Cross Hospital Ishinomaki Japan
6. Department of Gastroenterology Masuda Red Cross Hospital Masuda Japan
7. Department of Gastroenterology Japanese Red Cross Okayama Hospital Okayama Japan
8. Department of Gastroenterology Japanese Red Cross Kyoto Daiichi Hospital Kyoto Japan
9. Department of Gastroenterology Japanese Red Cross Akita Hospital Akita Japan
10. Department of Gastroenterology and Hepatology Osaka Red Cross Hospital Osaka Japan
11. Department of Gastroenterology Otsu Red Cross Hospital Otsu Japan
12. Department of Gastroenterology Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital Nagoya Japan
13. Department of Gastroenterology Japanese Red Cross Medical Center Tokyo Japan
14. Department of Gastroenterology Matsue Red Cross Hospital Matsue Japan
15. Department of Internal Medicine Himeji Red Cross Hospital Himeji Japan
16. Department of Gastroenterology Tottori Red Cross Hospital Tottori Japan
17. Department of Gastroenterology Takamatsu Red Cross Hospital Takamatsu Japan
18. Department of Gastroenterology Maebashi Red Cross Hospital Maebashi Japan
19. Department of Gastroenterology Japanese Red Cross Ashikaga Hospital Ashikaga Japan
20. Department of Gastroenterology Kitami Red Cross Hospital Kitami Japan