1. Department of Pediatric Surgery, Radboudumc Amalia Children’s Hospital , Nijmegen , The Netherlands
2. Surgical Research, Murdoch Children’s Research Institute , Melbourne, Victoria , Australia
3. Pediatric Surgery Unit, Cà Foncello Hospital , Treviso , Italy
4. Department of Child and Adolescent Psychiatry and Psychotherapy, University Medical Center of Johannes Gutenberg-University , Mainz , Germany
5. Department of Medicine, Faculty of Health, Witten/Herdecke University , Witten , Germany
6. Medical and Surgical Department of the Fetus-Newborn-Infant, Ospedale Bambin Gesù , Rome , Italy
7. Department of Pediatric Surgery, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico , Milan , Italy
8. Department of Pediatric Surgery, Erasmus Medical Center–Sophia Children’s Hospital , Rotterdam , The Netherlands
9. Department of Pediatric Surgery and Urology, Centre for Child and Youth Health, Klinikum Bremen-Mitte , Bremen , Germany
10. Department of Surgery, Division of Pediatric Surgery, University Medical Center Groningen , Groningen , The Netherlands
11. Pediatric Surgery Unit, University Hospital , Padua , Italy
12. Department of Pediatric Surgery, Gazi University Faculty of Medicine , Ankara , Turkey
13. Department of Pediatric Surgery, Emma Children’s Hospital Amsterdam UMC, Location University of Amsterdam , Amsterdam , The Netherlands
14. Amsterdam Gastroenterology and Metabolism Research Institute , Amsterdam , The Netherlands
15. Amsterdam Reproduction and Development Research Institute , Amsterdam , The Netherlands
16. Department of Paediatrics, University of Melbourne , Melbourne , Australia
17. Department of Paediatric Surgery, The Royal Children’s Hospital , Melbourne, Victoria , Australia
18. AIMAR—Associazione Italiana Malformazioni AnoRettali , Rome , Italy
19. SOMA—Selfhelp Organization for People with Anorectal Malformations e.V. , Munich , Germany
20. VA-Dutch Patient Organization for Anorectal Malformations , Huizen , The Netherlands
21. Department for Health Evidence, Radboudumc , Nijmegen , The Netherlands