1. Department of Pediatrics, Dr. von Hauner Children's Hospital LMU University Hospital Munich Munich Germany
2. Department of Hygiene and Epidemiology, Faculty of Public Health Research Group NutriLect Varna Bulgaria
3. Department of Neuroscience, Research Institute Prof. Paraskev Stoyanov Medical University Varna Bulgaria
4. Referral Center for Pediatric Gastroenterology and Nutrition Children's Hospital Zagreb Zagreb Croatia
5. Department of Paediatrics and Adolescent Medicine Medical University of Graz Graz Austria
6. Department of Pediatric Gastroenterology, Hepatology, and Nutrition Emma Children's Hospital, Amsterdam UMC Amsterdam The Netherlands
7. Pediatric Gastroenterology‐Nutrition and Hepatology Units Hôpital Necker‐Enfants Malades Paris France
8. Hepatology, Gastroenterology and Transplantation Unit Hospital Papa Giovanni XXIII Bergamo Italy
9. Department of Gastroenterology, Hepatology, Nutrition Disturbances and Pediatrics The Children's Memorial Health Institute Warsaw Poland
10. The European Society for Paediatric Gastroenterology Hepatology and Nutrition Geneva Switzerland
11. Department of Human Nutrition University of Glasgow Glasgow UK
12. Department of Pediatrics, Gastroenterology and Nutrition School of Medicine Collegium Medicum University of Warmia and Mazury Olsztyn Poland