1. Department of Gastroenterology Japanese Red Cross Kyoto Daiichi Hospital Kyoto Japan
2. Department of Gastroenterology Asahikawa Red Cross Hospital Asahikawa Japan
3. Department of Gastroenterology Japanese Red Cross Ishinomaki Hospital Ishinomaki Japan
4. Department of Gastroenterology Nasu Red Cross Hospital Otawara Japan
5. Department of Gastroenterology Nagoya Daini Red Cross Hospital Nagoya Japan
6. Department of Gastroenterology and Hepatology Ise Red Cross Hospital Ise Japan
7. Department of Gastroenterology Otsu Red Cross Hospital Siga Japan
8. Department of Gastroenterology and Hepatology Osaka Red Cross Hospital Osaka Japan
9. Department of Hepatology Japanese Red Cross Okayama Hospital Okayama Japan
10. Department of Gastroenterology Hiroshima Red Cross Hospital and Atomic‐Bomb Survivors Hospital Hiroshima Japan
11. Department of Gastroenterology and Hepatology Takamatsu Red Cross Hospital Takamatsu Japan
12. Department of Gastroenterology Matsue Red Cross Hospital Matsue Japan
13. Center for Liver and Biliary Diseases Matsuyama Red Cross Hospital Ehime Japan
14. Department of Gastroenterology Japanese Red Cross Tottori Hospital Tottori Japan
15. Department of Gastroenterology and Hepatology Musashino Red Cross Hospital Musashino Japan