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