1. Department of Gastroenterology, St. Marianna University School of Medicine, Yokohama Seibu Hospital, Japan
2. Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Japan
3. Department of Hepatology, Toranomon Hospital, Japan
4. Department of Gastroenterology, Ogaki Municipal Hospital, Japan
5. Department of Gastroenterology and Hepatology, Musashino Red Cross Hospital, Japan
6. Department of Gastroenterology and Hepatology, Osaka Red Cross Hospital, Japan
7. Department of Medical and Molecular Science, Division of Frontier Medical Science, Programs for Biomedical Research, Graduate School of Biomedical Science, Hiroshima University, Japan
8. Department of Gastroenterology, Graduate School of Medicine, Kanazawa University, Japan
9. Department of Gastroenterology and Metabology, Ehime University Graduate School of Medicine, Japan
10. Department of Gastroenterology, Sapporo Kosei General Hospital, Japan
11. Department of Medicine and Clinical Oncology, Graduate School of Medicine, Chiba University, Japan
12. Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Japan
13. Department of Gastroenterology and Hepatology, Jikei University School of Medicine, Japan
14. Division of Hepatobiliary and Pancreatic Disease, Department of Internal Medicine, Hyogo College of Medicine, Japan
15. Department of Hepatology and Gastroenterology, Juntendo Shizuoka Hospital, Japan
16. Department of Gastroenterology and Medicine, Fukuoka University Faculty of Medicine, Japan
17. Department of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, Japan
18. Department of Gastroenterology, Kurume University Medical Center, Japan
19. Department of Gastroenterology, Kobe Asahi Hospital, Japan