1. Department of Gastroenterology, Fukuoka University Chikushi Hospital, Chikushino, Fukuoka, Zokumyoin, Chikusino, Fukuoka, Japan
2. Department of Medicine, Shiga University of Medical Science Hospital, Japan
3. Center for Gastroenterology and Inflammatory Bowel Disease, Ofuna Chuo Hospital, Japan
4. Department of Gastroenterology, Osaka City University Graduate School of Medicine, Japan
5. Department of Intestinal Inflammation Research, Hyogo College of Medicine, Japan
6. Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Japan
7. Department of Gastroenterology, Fujita Health University, School of Medicine, Japan
8. Department of Gastroenterology and Hepatology, Kyoto University, Japan
9. Department of Gastroenterology and Hepatology, Sapporo Medical University School of Medicine, Japan
10. Department of Gastroenterology and Hepatology, Saitama Medical Center, Saitama Medical University, Japan
11. Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Japan
12. Department of Gastroenterology, Showa University Fujigaoka Hospital, Japan
13. Department of Medicine, Division of Gastroenterology, Jichi Medical University, Japan
14. Department of Gastroenterology, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Japan
15. Center for Advanced IBD Research and Treatment, Kitasato Institute Hospital, Kitasato University, Japan
16. Department of Gastroenterology and Hepatology, Tokyo Medical and Dental University, Japan
17. Internal Medicine, Toho University Sakura Medical Centre, Japan
18. Division of Gastroenterology, Department of Internal Medicine, Iwate Medical University, Japan