1. Department of Paediatric Gastroenterology Hepatology and Nutrition University of GroningenUniversity Medical Center Groningen Groningen The Netherlands
2. Department of Gastroenterology and Hepatology University of GroningenUniversity Medical Center Groningen Groningen The Netherlands
3. Department of Paediatric Gastroenterology Erasmus University Medical CenterSophia Children's Hospital Rotterdam The Netherlands
4. Department of Pediatric Gastroenterology VU University Medical Center Amsterdam The Netherlands
5. Pediatric Gastroenterology Emma Children's HospitalAmsterdam UMCUniversity of Amsterdam Amsterdam The Netherlands
6. Department of Pediatric Gastroenterology University Medical Center Utrecht – Wilhelmina Children's Hospital Utrecht The Netherlands
7. Department of Pediatrics Isala Hospital Zwolle The Netherlands
8. Broad Institute of Harvard and Massachusetts Institute of Technology Boston MA USA
9. Massachusetts General Hospital, Gastroenterology Boston MA USA
10. Institute for Molecular Medicine Finland (FIMM)University of Helsinki Helsinki Finland
11. Clinic of Gastroenterology Helsinki Helsinki University and Helsinki University Hospital Helsinki Finland
12. Stanford University Stanford CA United States
13. Department of Genetics University of GroningenUniversity Medical Center Groningen Groningen The Netherlands