1. Department of Paediatric Gastroenterology, APHP Hôpital Necker Enfants Malades, 149 Rue de Sèvres 75015 Paris, France
2. Université Paris Descartes, Sorbonne Paris Cité, 2 Rue de l’École de Médecine, 75006 Paris, France
3. INSERM U989, Institut IMAGINE, 24 Bd Montparnasse, 75015 Paris, France
4. Department of Paediatrics I, Semmelweis University, Bókay János str. 53, 1083 Budapest, Hungary
5. Department of Gastroenterology, Helsinki University Hospital for Children and Adolescents, Stenbäckinkatu 11, P.O. Box 281, 00290 Helsinki, Finland
6. Department of Paediatrics, Hospital for Sick Children, University of Toronto, 555 University Avenue, M5G 1X8 Toronto, ON, Canada
7. Paediatric Gastroenterology and Nutrition Unit, Tel Aviv University, Edith Wolfson Medical Center, 62 HaLohamim Street, 58100 Holon, Israel
8. Department of Paediatric Gastroenterology, Erasmus Medical Center, Wytemaweg 80, 3015 CN Rotterdam, Netherlands
9. Unit of Paediatric Gastroenterology, Hospital S. João, A Hernani Monteiro, 4202-451, Porto, Portugal
10. Gastroenterology and Endoscopy Unit, Istituto G. Gaslini, Via G. Gaslini 5, 16148 Genoa, Italy
11. Division of Gastroenterology and Nutrition, and Children's Research Center, University Children's Hospital Zurich, Steinwiesstrasse 75, 8032 Zurich, Switzerland
12. Department of Pediatrics, University Hospital Motol, Uvalu 84, 150 06 Prague, Czech Republic
13. Department of Paediatrics, St. Marien Hospital, Robert-Koch-Str.1, 53115 Bonn, Germany
14. Department of Paediatric Gastroenterolgoy, Hepatology and Nutrition, Hospital Sant Joan de Déu, Paseo Sant Joan de Déu 2, 08950 Barcelona, Spain
15. Department of Pediatrics, Centre for Clinical Research, Entrance 29, Västmanland Hospital, 72189 Västerås/Karolinska Institutet, Stockholm, Sweden
16. Department of Gastroenterology and Nutrition, Hopital Robert Debré, 48 Bd Sérurier, APHP, 75019 Paris, France
17. Université Paris-Diderot Sorbonne Paris-Cité, 75018 Paris France
18. Department of Gastroenterology, Hepatology and Feeding Disorders, Instytut Pomnik Centrum Zdrowia Dziecka, Ul. Dzieci Polskich 20, 04-730 Warsaw, Poland
19. Department of Paediatric Gastroenterology, Children's Hospital, University of Zagreb Medical School, Klaićeva 16, 10000 Zagreb, Croatia
20. Department of Paediatric Gastroenterology, Dr. von Hauner Children's Hospital, Lindwurmstr. 4, 80337 Munich, Germany
21. Department of Gastroenterology and Nutrition, Meyer Children's Hospital, Viale Gaetano Pieraccini 24, 50139 Florence, Italy
22. Department of Translational Medical Science, Section of Paediatrics, University of Naples “Federico II”, Via S. Pansini, 5, 80131 Naples, Italy
23. Paediatric Gastroenterology and Nutrition Unit, Hospital Materno Infantil, Avda. Arroyo de los Ángeles s/n, 29009 Málaga, Spain
24. Department of Paediatrics 460, Hvidovre University Hospital, Kettegård Allé 30, 2650 Hvidovre, Denmark
25. Department of Paediatric Gastroenterology, Yorkhill Hospital, Dalnair Street, Glasgow G3 8SJ, United Kingdom
26. 2nd Department of Paediatrics, “Iuliu Hatieganu” University of Medicine and Pharmacy, Emergency Children's Hospital, Crisan nr. 5, 400177 Cluj-Napoca, Romania
27. Department of Pediatric Gastroenterology and Nutrition, Rambam Health Care Campus Rappaport Faculty Of Medicine, 6 Ha’alya Street, P.O. Box 9602, 31096 Haifa, Israel
28. Department of Paediatric Gastroenterology, Hepatology and Nutrition, University Medical Center Groningen, P.O. Box 30001, 9700 RB Groningen, Netherlands
29. Department of Paediatric Gastroenterology and Nutrition, Children's University Hospital, Laarbeeklaan 101, 1090 Brussels, Belgium
30. Paediatric Gastroenterology and Nutrition Unit, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, 52625 Tel Hashomer, Israel
31. Child Life and Health, Paediatric Gastroenterology, Royal Hospital for Sick Children, 9 Sciennes Road, Edinburgh EH9 1LF, United Kingdom
32. Department of Medicine I, Agaplesion Markus Hospital, Wilhelm-Epstein-Str. 4, 60431 Frankfurt/Main, Gemany
33. 33-Gastroenterology, Sheba Medical Center, 52621 Tel Hashomer, Israel
34. Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Mass General Hospital for Children, 175 Cambridge Street, 02114 Boston, United States
35. Pediatric Gastroenterology Unit, Shaare Zedek Medical Center, The Hebrew University of Jerusalem, Israel