1. Department of Lifetime Clinical Immunology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
2. School of Health Science, Shinshu University School of Medicine, Matsumoto, Japan.
3. Department of Pediatrics and Adolescent Medicine, Tokyo Medical University, Tokyo, Japan.
4. Department of Pediatrics, Kanazawa University, Kanazawa, Japan.
5. Department of Pediatrics, Fuji City General Hospital, Shizuoka, Japan.
6. Center of Regional Medical Research and Education, Gunma University Hospital, Maebashi, Japan.
7. Department of Pediatrics and Developmental Biology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
8. Division of Gastroenterology, National Center for Child Health and Development, Tokyo, Japan.
9. Department of Pediatric Gastroenterology, Nutrition and Endocrinology, Osaka Women’s and Children’s Hospital, Osaka, Japan.
10. Department of Pediatric Hepatology and Gastroenterology, Saiseikai Yokohama City Tobu Hospital, Yokohama, Kanagawa, Japan.
11. Research and Development, AstraZeneca, Tokyo, Japan.
12. Research and Development, AstraZeneca, Osaka, Japan.
13. Department of Pediatrics and Adolescent Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan.