1. The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, Ichikawa, Japan.
2. Genome Medical Science Project, National Center for Global Health and Medicine, Ichikawa, Japan.
3. Department of Gastroenterology and Hepatology, Japan Red Cross Musashino Hospital, Tokyo, Japan.
4. Funabashi Central Hospital, Funabashi, Japan.
5. Department of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, Suita, Japan.
6. Department of Gastroenterology and Hepatology, Hokkaido University Graduate School of Medicine, Hokkaido University, Sapporo, Japan.
7. Division of Gastroenterology and Hepatology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan.
8. Department of Gastroenterology, Okayama University Hospital, Okayama, Japan.
9. Department of Gastroenterology, National Center for Global Health and Medicine, Tokyo, Japan.
10. Department of Gastroenterology, Ogaki Municipal Hospital, Ogaki, Japan.
11. Department of Gastroenterology and Hepatology, Juntendo University Shizuoka Hospital, Izunokuni, Japan.
12. Department of Gastroenterology, Shinshu University School of Medicine, Matsumoto, Japan.
13. Clinical Research Center, National Hospital Organization, Nagasaki Medical Center, Nagasaki, Japan.
14. Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Fukuoka, Japan.
15. Department of Gastroenterology, Mitsui Memorial Hospital, Tokyo, Japan.
16. Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan.
17. Department of Gastroenterology, Yamagata University Faculty of Medicine, Yamagata, Japan.
18. Department of Gastroenterology, Gifu Municipal Hospital, Gifu, Japan.
19. Department of Gastroenterology, Akita City Hospital, Akita, Japan.
20. Genome Analysis Center, Yamanashi Prefecture Central Hospital, Yamanashi, Japan.