1. Department of Paediatric Gastroenterology, University of Groningen, University Medical Centre Groningen, Beatrix Children’s Hospital, Groningen, The Netherlands
2. Pediatric Gastroenterology and Liver Unit, Maternal and Child Health Department, Sapienza - University of Rome, Rome, Italy
3. Department of Gastroenterology, Nutrition and Liver Diseases, Schneider Children’s Medical Center, Petach Tikvah, Affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Israel
4. Paediatric Gastroenterology Unit, Department of Paediatrics, University Hospital Motol, Prague, Czech Republic
5. Department of Paediatric Gastroenterology, Erasmus MC-Sophia Children’s Hospital, Rotterdam, The Netherlands
6. Department of Pediatrics/Centre for Clinical Research, Västmanland Hospital, Västeras and Department of Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden
7. Department of Paediatric Gastroenterology, Barts Health Trust, The Royal London Children’s Hospital, London, UK
8. Human Nutrition, School of Medicine, Dentistry and Nursing, University of Glasgow, Glasgow, UK
9. Department of Paediatrics, Division of Gastroenterology, Hepatology and Nutrition, Hospital for Sick Children, University of Toronto, Toronto, Canada
10. Child Life and Health, University Of Edinburgh, Edinburgh, UK
11. Department of Pediatrics, Division of Gastroenterology and Hepatology, Dr. von Hauner Children’s Hospital, University Hospital, LMU Munich, Munich, Germany
12. Department of Pediatrics, Gastroenterology and Nutrition, School of Medicine Collegium Medicum University of Warmia and Mazury, Olsztyn, Poland
13. Department of Paediatrics, Children´s Hospital, University of Helsinki and Tampere University, Tampere, Finland
14. Pediatric Gastroenterology and Nutrition Unit, Wolfson Medical Center, Tel Aviv University, Israel
15. Division of Pediatric Gastroenterology and Nutrition, Amsterdam UMC - location AMC, Amsterdam, The Netherlands
16. Department of Pediatric Gastroenterology, Hepatology and Nutrition, Hospital Sant Joan de Déu, Barcelona, Spain
17. Pediatric Gastroenterology and Nutrition Unit, IBIMA, Hospital Regional Universitario de Málaga, Málaga, Spain
18. Department of Paediatric Gastroenterology and Nutrition, Royal Hospital for Sick Children, Edinburgh, UK
19. Pediatric Gastroenterology Unit, Edmond and Lily Safra Children’s Hospital, Sheba Medical Center, Ramat Gan, Israel
20. Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
21. Department of Colon and Rectal Surgery, Humanitas Clinical and Research Center – IRCCS, Rozzano Milano, Italy
22. Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
23. Paediatric Gastroenterology, Shaare Zedek Medical Centre, the Hebrew University of Jerusalem, Israel
24. Division of Pediatric Gastroenterology, Edmonton Pediatric IBD Clinic (EPIC), Departments of Pediatrics & Physiology, University of Alberta, Edmonton, Canada
25. Assistance Publique- Hôpitaux de Paris, Hôpital Necker Enfants Malades, Pediatric Gastroenterology, Paris, France
26. Faculté de Médecine, Université Sorbonne Paris Cité, Paris Descartes, Paris, France