1 Department of Pediatrics, Gunma University Graduate School of Medicine, 3-39-22, Showa-Machi, Maebashi, Gunma, 371-8511, Japan. ishiget@gunma-u.ac.jp.
2 Department of Pediatrics and Adolescent Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan.
3 Division of Gastroenterology and Hepatology, Department of Internal Medicine, Hyogo Medical University, Nishinomiya, Japan.
4 Division of Gastroenterology, Center for Pediatric Inflammatory Bowel Disease, National Center for Child Health and Development, Tokyo, Japan.
5 Division of Nephrology and Rheumatology, National Center for Child Health and Development, Tokyo, Japan.
6 Department of Pediatrics, Juntendo University Faculty of Medicine, Tokyo, Japan.
7 Inflammatory Bowel Disease Center, Yokohama City University Medical Center, Yokohama, Japan.
8 Department of Pediatrics, Wakayama Medical University, Wakayama, Japan.
9 Department of Gastroenterology and Hepatology, Kansai Medical University, Osaka, Japan.
10 Department of Pediatrics and Child Health, Kurume University School of Medicine, Kurume, Fukuoka, Japan.
11 Center for Maternal-Fetal, Neonatal and Reproductive Medicine, National Center of Child Health and Development, Tokyo, Japan.
12 Department of Infection and Immunology, Aichi Children's Health and Medical Center, Obu, Japan.
13 Division of Gastroenterology and Hepatology, Saitama Children's Medical Center, Saitama, Japan.
14 Japan Drug Information Institute in Pregnancy, National Center of Child Health and Development, Tokyo, Japan.
15 Department of Pediatrics, Japanese Red Cross Kumamoto Hospital, Kumamoto, Japan.
16 Department of Pediatrics, Kyorin University School of Medicine, Tokyo, Japan.
17 Department of Pediatrics, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan.
18 Department of Pediatric Gastroenterology, Nutrition and Endocrinology, Osaka Women's and Children's Hospital, Osaka, Japan.
19 Division of Gastroenterology, Tokyo Metro Children's Medical Center, Tokyo, Japan.
20 Department of Gastroenterology, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan.
21 Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan.
22 Department of Gastroenterology and Hepatology, Kyorin University School of Medicine, Tokyo, Japan.
23 Department of Pediatrics, Gunma University Graduate School of Medicine, 3-39-22, Showa-Machi, Maebashi, Gunma, 371-8511, Japan.
24 Department of Intestinal Inflammation Research, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan.