1. Juliet Keidan Institute of Paediatric Gastroenterology, Shaare Zedek Medical Center, Hebrew University of Jerusalem, Jerusalem, Israel
2. Department of Gastroenterology, Hepatology, and Nutrition, Faculty of Medicine, University Children’s Hospital, University of Ljubljana, Ljubljana, Slovenia
3. Department of Pediatric Gastroenterology, University Children’s Hospital Basel, Basel, Switzerland
4. First Department of Pediatrics, Athens Children’s Hospital “Agia Sofia”, University of Athens, Athens, Greece
5. Pediatric Gastroenterology and Liver Unit, Maternal and Child Health Department, Sapienza - University of Rome, Rome, Italy
6. Department of Paediatric Gastroenterology, Hospital Lusíadas, Porto, Portugal
7. Digestive Endoscopy Surgery Unit, Bambino Gesù Children’s Hospital IRCCS, Rome, Italy
8. Digestive Endoscopy, Gastroenterology, Hepatology, and Nutrition Unit, Bambino Gesù Children’s Hospital IRCCS, Rome, Italy
9. Department of Paediatric Gastroenterology, Sheffield Children’s Hospital, Sheffield, United Kingdom
10. Department of Pediatric Gastroenterology, Hepatology and Nutrition, KidZ Health Castle, Vrije Universiteit Brussel (VUB), UZ Brussel, Brussels, Belgium
11. Paediatric Gastroenterology Department, Great Ormond Street Hospital, London, United Kingdom
12. Department of Pediatric Gastroenterology, University of Messina, Sicily, Italy
13. Department of Pediatric Gastroenterology, Al Jalila Children’s Hospital, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
14. Department of Pediatric Gastroenterology, Queen Fabiola Children’s University Hospital, Bruxelles, Belgium.