1. Department of Gastroenterology and Hepatology Osaka University Graduate School of Medicine Osaka Japan
2. Center for Preventive Medicine Keio University School of Medicine Tokyo Japan
3. Department of Inflammatory Bowel Disease, Division of Surgery Hyogo College of Medicine Hyogo Japan
4. Division of Gastroenterology, Department of Internal Medicine Saga University Saga Japan
5. Center for Advanced IBD Research and Treatment Kitasato University Kitasato Institute Hospital Tokyo Japan
6. Division of Gastroenterology and Hepatology, Department of Internal Medicine The Jikei University School of Medicine Tokyo Japan
7. First Department of Medicine Hamamatsu University School of Medicine Shizuoka Japan
8. Second Department of Internal Medicine Osaka Medical College Osaka Japan
9. Department of Surgical Oncology The University of Tokyo Tokyo Japan
10. Department of Gastroenterology, Faculty of Medicine Fukuoka University Fukuoka Japan
11. Department of Gastroenterology and Hepatology Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
12. Department of Gastroenterology and Hepatology Tokyo Medical and Dental University Tokyo Japan
13. Department of Gastroenterology and Hepatology Kyorin University School of Medicine Tokyo Japan
14. Division of Gastroenterology and Hepatology, Department of Internal Medicine Toho University Sakura Medical Center Chiba Japan
15. Division of Internal Medicine, Center for Inflammatory Bowel Disease Hyogo College of Medicine Hyogo Japan
16. Department of Gastroenterology and Hepatology, School of Medicine Sapporo Medical University Hokkaido Japan
17. Advanced Research Institute Tokyo Medical and Dental University Tokyo Japan