1. Division of Gastroenterology and Hepatology, Department of Internal Medicine Hyogo Medical University Nishinomiya Japan
2. Department of Internal Medicine Japanese Red Cross Himeji Hospital Himeji Japan
3. Department of Nursing Gifu Kyoritsu University Ogaki Japan
4. Gastroenterology Center Ehime Prefectural Central Hospital Matsuyama Japan
5. Department of Gastroenterology and Metabology Ehime University Graduate School of Medicine Ehime Japan
6. Department of Gastroenterology Okayama City Hospital Okayama Japan
7. Department of Gastroenterology and Hepatology Kagawa University Kagawa Japan
8. Division of Gastroenterology and Hepatology, Department of Internal Medicine Nippon Medical School Tokyo Japan
9. Department of Hepatology Kagawa Prefectural Central Hospital Takamatsu Japan
10. Department of Gastroenterology Asahi General Hospital Asahi Japan
11. Department of Gastroenterology Osaka Medical and Pharmaceutical University Osaka Japan
12. Center of Gastroenterology Teine Keijinkai Hospital Sapporo Japan
13. Department of Gastroenterology Saiseikai Niigata Hospital Niigata Japan
14. Department of Gastroenterology Toyama University Hospital Toyama Japan
15. Hepato‐biliary Center Japanese Red Cross Matsuyama Hospital Matsuyama Japan
16. Department of Gastroenterology and Hepatology Ogaki Municipal Hospital Ogaki Japan
17. Department of Gastroenterology Japanese Red Cross Takamatsu Hospital Takamatsu Japan
18. Department of Gastroenterology Gunma Saiseikai Maebashi Hospital Maebashi Japan
19. Department of Clinical Research National Hospital Organization Takasaki General Medical Center Takasaki Japan
20. Division of Gastroenterology and Hepatology Otakanomori Hospital Kashiwa Japan
21. Department of Hepatology Hamamatsu University School of Medicine Hamamatsu Japan
22. Department of Surgery Kansai Medical University Osaka Japan
23. Department of Gastroenterology National Hospital Organization Takasaki General Medical Center Takasaki Japan