1. Department of Pediatric Gastroenterology; Hepatology and Nutrition; Astrid Lindgren Children's Hospital; CLINTEC; Karolinska Institute; Karolinska University Hospital Huddinge; Stockholm Sweden
2. Division of Transplantation Surgery; CLINTEC; Karolinska Institute; Karolinska University Hospital Huddinge; Stockholm Sweden
3. Department of Pediatric and Adolescent Medicine; Rigshospitalet; Copenhagen Denmark
4. Department of Transplantation Surgery; Helsinki University Central Hospital; Helsinki Finland
5. Department of Gastroenterology; Oslo University Hospital; Rikshospitalet; Oslo Norway
6. Department of Pediatric Gastroenterology; Hepatology and Nutrition; The Queen Silvia Children's Hospital; Gothenburg Sweden
7. Medical Faculty; Rigshospitalet; Copenhagen Denmark
8. Department of Transplantation Surgery; Sahlgrenska University Hospital; Gothenburg Sweden
9. Department of Transplantation Surgery; Rigshospitalet; Copenhagen Denmark
10. Department of Pediatric Nephrology; Helsinki University Central Hospital; Helsinki Finland
11. Department of Pediatric Gastroenterology; Oslo University Hospital; Rikshospitalet; Oslo Norway
12. Department of Transplantation Surgery; Uppsala University Hospital; Uppsala Sweden