1. aInstitute of Gastroenterology, Nutrition and Liver Diseases, Schneider Children’s Medical Center of Israel, Petach Tikva, Tel-Aviv University, Tel-Aviv, Israel
2. bPediatric and Gastroenterology Unit, Sapienza University of Rome-Umberto I Hospital, Rome, Italy
3. cGastroenterology and Nutrition Unit, Meyer children’s Hospital, Florence, Italy
4. dGastroenterology, Digestive Endoscopy and Nutrition Unit, Institute for Maternal and Child Health-IRCCS “Burlo Garofolo,” Trieste, Italy
5. eDepartment of Pediatric Gastroenterology, Erasmus MC-Sophia Children’s Hospital, Rotterdam, Netherlands
6. fPediatric Gastroenterology unit, Maggiore Hospital, Bologna, Italy
7. gDepartment of Paediatric Gastroenterology and Nutrition, Royal Hospital for Children and Young People, Edinburgh, Scotland
8. hChildren’s Hospital Zagreb, University of Zagreb Medical School, Zagreb, Croatia
9. iJuliet Keidan Institute of Pediatric Gastroenterology Hepatology and Nutrition, Shaare Zedek Medical Center, Jerusalem, Israel
10. jPediatric Gastroenterology, University of Manitoba, Winnipeg, Canada
11. kDepartment of Pediatrics, Dr von Hauner Children’s Hospital, University Hospital, LMU Munich, Munich, Germany
12. lPediatric Gastroenterology Unit, Edmond & Lily Safra Children’s Hospital, Sheba Medical Center, Ramat-Gan, Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
13. mDepartment of Pediatrics, Gastroenterology and Nutrition, Jagiellonian University Medical College, Krakow, Poland
14. nDepartment of Woman, Child and General and Specialistic Surgery, University of Campania Vanvitelli, Naples, Italy
15. oHeim Pal National Institute for Pediatrics, Budapest, Institute for Translational Medicine, University of Pécs, and Department of Family Care Methodology, Semmelweis University, Budapest, Hungary
16. pDepartment of Pediatric and Adolescent Medicine, Akershus University Hospital, Lørenskog, Norway
17. qPaediatric Gastroenterology Department, Al Jalila Children’s Hospital, Mohammed Bin Rashid University, Dubai, United Arab Emirates
18. rPediatric Gastroenterology Institute, “Dana-Dwek” Children’s Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv University, Tel Aviv, Israel
19. sPaediatric gastroenterology, KidZ Health Castle, UZ Brussel, Vrije Universiteit Brussel, Brussels, Belgium
20. tPediatric Hepatology, Gastroenterology and Transplantation, ASST Papa Giovanni XXIII, Bergamo, Italy
21. uPediatric Gastroenterology and Cystic Fibrosis Unit, Department of Human Pathology in Adulthood and Childhood “G. Barresi,” University of Messina, Italy
22. vDepartment NEUROFARBA, Gastroenterology and Nutrition Unit, Meyer Children’s Hospital, University of Florence, Florence, Italy
23. wThe Hebrew University of Jerusalem, Jerusalem, Israel