1. Gastroenterology, Digestive Endoscopy and Nutrition UnitInstitute for Maternal and Child HealthIRCCS, ‘Burlo Garofolo’TriesteItaly
2. Pediatric Gastroenterology and Endoscopy UnitInstitute ‘Giannina Gaslini’GenoaItaly
3. Pediatric Gastroenterology and Cystic Fibrosis UnitDepartment of Human Pathology in Adulthood and Childhood ‘G. Barresi’University of MessinaMessinaItaly
4. Unit of Translational Physiology and NutritionDepartment of Biological, Geological and Environmental SciencesUniversity of BolognaBolognaItaly
5. Department of Neuroscience, Psychology, Pharmacology and Child's HealthUniversity of FlorenceMeyer HospitalFlorenceItaly
6. Department of Medicine, Surgery and Health SciencesUniversity of TriesteTriesteItaly
7. Pediatric DepartmentUniversity of Milano-BicoccaFondazione MBBMSan Gerardo HospitalMonzaItaly
8. Pediatric Gastroenterology and Liver UnitSapienza University of RomeRomeItaly
9. Department of Woman, Child and General and Specialist SurgeryUniversity of Campania ‘Luigi Vanvitelli’NaplesItaly
10. Department of Translational Medical ScienceSection of Pediatrics, ‘Federico II’University of NaplesItaly
11. Pediatric Department‘Casa Sollievo della Sofferenza’ HospitalIRCCSSan Giovanni RotondoItaly
12. Pediatric DepartmentCa' Foncello HospitalTrevisoItaly
13. Gastroenterology UnitPediatric DepartmentMaggiore HospitalBolognaItaly