1. Division of Gastroenterology and Hepatology, First Department of Pediatrics, University of Athens, Childrenʼs Hospital Agia Sofia, Athens, Greece
2. Pediatric Gastroenterology Unit, La Fe University Hospital, Valencia, Spain
3. Pediatric Liver Center, Kingʼs College Hospital, London, United Kingdom
4. Birmingham Childrenʼs Hospital, NHS Foundation Trust, Birmingham, United Kingdom
5. Department of Translational Medical Science, Section of Pediatrics, University of Naples Federico II, Naples, Italy
6. Unit of Gastroenterology, Hepatology, Nutrition, Diabetes, and Inborn Errors of Metabolism, Children Hospital, Toulouse University Hospital, Toulouse, France
7. Pediatric Gastroenterology Unit, Department of Pediatrics, Hadassah University Hospitals, Jerusalem, Israel
8. Pediatric Gastroenterology Unit, University Hospital Puerta de Hierro-Majadahonda, Madrid, Spain
9. Department of Pediatric Gastroenterology, Erasmus MC-Sophia Childrenʼs Hospital, Rotterdam, The Netherlands
10. Division of Pediatric Gastroenterology and Nutrition, University Childrenʼs Hospital, Basel, Switzerland
11. Department of Pediatrics and Adolescent Medicine, University Medical Center Ulm, Ulm, Germany
12. Department of Pediatric Gastroenterology, Leuven University Hospital, Leuven, Belgium
13. Department of Pediatrics, University Hospital Motol, Prague, Czech Republic
14. Department of Pediatrics, Medical University of Graz, Graz, Austria
15. University Hospital Center Zagreb – Division for Pediatric Gastroenterology, Hepatology and Nutrition & University of Zagreb School of Medicine, Zagreb, Croatia
16. 4th Department of Pediatrics, Aristotle University of Thessaloniki, Thessaloniki, Greece
17. Department of Gastroenterology, Hepatology and Nutrition, Ljubljana University Childrenʼs Hospital, Ljubljana, Slovenia
18. Vilnius University Clinic of Childrenʼs Diseases, Vilnius, Lithuania
19. Division of Pediatric Gastroenterology, Department of Pediatrics, Ankara University School of Medicine, Ankara, Turkey
20. 2nd Department of Pediatrics, Saint Marina University hospital, Varna, Bulgaria
21. Sheffield Childrenʼs Hospital NHS Foundation Trust, Sheffield, United Kingdom