1. Children's Hospital Zagreb; University of Zagreb School of Medicine; Zagreb Croatia
2. School of Medicine; University J.J Strossmayer; Osijek Croatia
3. Paediatric Department; Vittore Buzzi Children's Hospital; Università degli Studi di Milano; Milan Italy
4. 2nd Paediatric Clinic; University of Medicine and Pharmacy Iuliu Hatieganu; Cluj-Napoca Romania
5. Department of Paediatric Gastroenterology, Hepatology and Nutrition; Intestinal Failure Rehabilitation Centre; National Reference Centre for Rare Digestive Diseases; APHP Necker-Enfants Malades Hospital; Paris-Descartes University; Paris France
6. Paediatric Gastroenterology, Hepatology and Nutrition; Cerrahpaşa Medical Faculty; Istanbul University; Istanbul Turkey
7. Department of Paediatrics; Scientific Institute ‘Casa Sollievo della Sofferenza’; University of Foggia; Foggia Italy
8. European Paediatric Association/Union of National European Paediatric Societies and Associations (EPA/UNEPSA); Berlin Germany