1. Department of Internal medicine Japanese Red Cross Himeji Hospital Hyogo Japan
2. Department of Gastroenterology and Hepatology Japanese Red Cross Musashino Hospital Tokyo Japan
3. Department of Gastroenterology Japanese Red Cross Asahikawa Hospital Hokkaido Japan
4. Department of Hepatology Japanese Red Cross Ise Hospital Ise Mie Japan
5. Department of Gastroenterology Japanese Red Cross Masuda Hospital Shimane Japan
6. Department of Hepatology Japanese Red Cross Okayama Hospital Okayama Japan
7. Department of Gastroenterology Japanese Red Cross Kyoto Daiichi Hospital Kyoto Japan
8. Department of Gastroenterology Takamatsu Red Cross Hospital Kagawa Japan
9. Department of Gastroenterology Japanese Red Cross Akita Hospital Akita Japan
10. Department of Gastroenterology Japanese Red Cross Matsue Hospital Shimane Japan
11. Center for Liver‐Biliary‐Pancreatic Diseases, Matsuyama Red Cross Hospital Ehime Japan
12. Department of Gastroenterology Japanese Red Cross Ishinomaki Hospital Miyagi Japan
13. Department of Gastroenterology Japanese Red Cross Maebashi Hospital Gunma Japan
14. Department of Gastroenterology Japanese Red Cross Osaka Hospital Osaka Japan
15. Department of Gastroenterology Japanese Red Cross Oita Hospital Oita Japan
16. Department of Gastroenterology Japanese Red Cross Karatsu Hospital Saga Japan
17. Department of Gastroenterology Japanese Red Cross Nasu Hospital Tochigi Japan
18. Department of Gastroenterology Japanese Red Cross Nagoya Daini Hospital Nagoya Japan
19. Department of Gastroenterology Hiroshima Red Cross Hospital & Atomic‐bomb Survivors Hospital Hiroshima Japan
20. Department of Gastroenterology Japanese Red Cross Otsu Hospital Shiga Japan
21. Department of Internal Medicine Japanese Red Cross Tottori Hospital Tottori Japan