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