1. Division of Pediatric Surgery, Department of Surgery, Showa University, Tokyo, Japan
2. Department of Pediatric Surgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
3. Department of Pediatric Surgery, Research Field in Medicine and Health Sciences, Medical and Dental Sciences Area, Research and Education Assembly, Kagoshima University, Kagoshima, Japan
4. Department of Pediatric Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
5. Department of Pediatric Surgery, Akita University Graduate School of Medicine, Akita, Japan
6. Department of Paediatric Gastroenterology, Royal Manchester Children’s Hospital, Manchester, UK
7. Department of Paediatric Gastroenterology, Great Ormond Street Hospital for Children, NHS Foundation Trust and UCL Institute of Child Health, London, UK
8. Pediatric Research Center, Children’s Hospital, University of Helsinki, Helsinki University Hospital, Helsinki, Finland
9. Department of Gastroenterology and Nutrition, Birmingham Women and Children’s Hospital, Birmingham, UK
10. Department of Paediatric Gastroenterology, Sheffield Children’s Hospital, Sheffield, UK
11. Takeda Development Center Americas, Inc., Boston, MA, USA
12. Statistical and Quantitative Sciences, Data Sciences Institute, Takeda Pharmaceutical Company Limited, Osaka, Japan
13. Japan Medical Office, Takeda Pharmaceutical Company Limited, Tokyo, Japan
14. Department of Pediatric Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
15. Division of Pediatric Surgery, Department of Surgery, Tohoku University Hospital, Sendai, Japan.