1. Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine
2. Members of the Japanese Society for Pediatric Inflammatory Bowel Disease Working Group
3. Department of Pediatrics and Adolescent Medicine, Juntendo University Graduate School of Medicine
4. Department of Pediatrics, Osaka Medical College
5. Department of Pediatrics, Osaka General Medical Center
6. Inflammatory Bowel Disease Center, Yokohama City University Medical Center
7. Department of Pediatrics, Gunma University Graduate School of Medicine
8. Department of Pediatric Gastroenterology, Nutrition and Endocrinology, Osaka Medical Center and Research Institute for Maternal and Child Health
9. Division of Gastroenterology, National Center for Child Health and Development
10. PAL Children's Clinic
11. Department of Pediatrics, Kurume University Medical Center
12. Department of Pediatrics, Tokyo Women's Medical University Hospital
13. General Health Support Center, Gunma University Graduate School of Medicine