1. Department of Medicine Teikyo University School of Medicine Tokyo Japan
2. Department of Public Health Osaka Metropolitan University Graduate School of Medicine Osaka Japan
3. Department of Gastroenterology and Metabology Ehime University Graduate School of Medicine Ehime Japan
4. Clinical Research Center National Hospital Organization (NHO) Nagasaki Medical Center Nagasaki Japan
5. Department of Gastroenterology Fukushima Medical University School of Medicine Fukushima Japan
6. Hepatology Division Department of Internal Medicine II Hamamatsu University School of Medicine Shizuoka Japan
7. Department of Gastroenterology and Hepatology Gunma University Graduate School of Medicine Gunma Japan
8. Division of Hepatology and Gastroenterology Department of Medicine Shinshu University School of Medicine Nagano Japan
9. Department of Gastroenterology and Hepatology Kurashiki Central Hospital Okayama Japan
10. Department of Gastroenterology and Hepatology Kyoto University Graduate School of Medicine Kyoto Japan
11. Department of Gastroenterology and Hepatology Faculty of Medicine Saitama Medical University Saitama Japan
12. Division of Hepatology Department of Internal Medicine Iwate Medical University Iwate Japan
13. Division of Gastroenterology Department of Medicine Kurume University School of Medicine Fukuoka Japan
14. Department of Gastroenterology Graduate School of Medicine Juntendo University Tokyo Japan
15. Department of Gastroenterology Graduate School of Medicine The University of Tokyo Tokyo Japan
16. Department of Gastroenterology and Hepatology Nagoya University Graduate School of Medicine Aichi Japan
17. Department of Gastrointestinal and Hepato‐Biliary‐Pancreatic Surgery Nippon Medical School Tokyo Japan
18. Research Center for GLOBAL and LOCAL Infectious Diseases Oita University Oita Japan