1. Department of Pediatrics and Adolescent Medicine; Juntendo University Graduate School of Medicine; Matsumoto Nagano Japan
2. Department of Pediatrics; Shinshu University School of Medicine; Matsumoto Nagano Japan
3. Department of Pediatrics; Nagano Prefectural Suzaka Hospital; Suzaka Nagano Japan
4. Department of Pediatric Gastroenterology; Nutrition and Endocrinology, Osaka Women's and Children's Hospital; Izumi Japan
5. Department of Pediatrics; Hiroshima City Funairi Citizens Hospital; Hiroshima Japan
6. Department of Pediatrics; Osaka City University Graduate School of Medicine; Abeno Tokyo Japan
7. Division of Gastroenterology; National Center for Child Health and Development; Setagaya Tokyo Japan
8. Research and Development; AstraZeneca; Kitaku Osaka Japan
9. Global Medicine Development; AstraZeneca Gothenburg; Mölndal Sweden