1. Department of Gastroenterology, Oslo University Hospital, Oslo, Norway
2. Unger-Vetlesen Institute, Lovisenberg Diaconal Hospital, Oslo, Norway
3. Department of Nursing Science, Institute of Health and Society, University of Oslo, Oslo, Norway
4. Pediatric Department, Oslo University Hospital, Oslo, Norway
5. Department of Gastroenterology, Telemark Hospital, Skien, Norway
6. Department of Gastroenterology, Akershus University Hospital, Lørenskog, Norway
7. Institute of Clinical Medicine, University of Oslo, Oslo, Norway
8. Department of Paediatrics, Vestfold Hospital Trust, Tønsberg, Norway
9. Department of Health Sciences, Østfold University college, Halden, Norway
10. Department of Paediatric and Adolescent Medicine, Akershus University Hospital, Lørenskog, Norway
11. Department of Gastroenterology, Østfold Hospital Trust, Grålum, Norway
12. Department of Pediatric and Adolescent Medicine, Østfold Hospital Trust, Grålum, Norway
13. Medical Department, Vestfold Hospital Trust, Tønsberg, Norway
14. Department of Gastroenterology, Drammen Hospital, Vestre Viken Hospital Trust, Drammen, Norway
15. Department of Pediatric and Adolescent medicine, Drammen Hospital Vestre Viken Hospital Trust
16. Department of Pediatrics, Telemark Hospital, Skien, Norway
17. Department of Medicine, Baerum Hospital, Vestre Viken Hospital Trust, Gjettum, Norway
18. Department of Medicine, Sorlandet Hospital Kristiansand, Kristiansand, Norway
19. Department of Internal Medicine, Sørlandet Sykehus Arendal, Arendal, Norway
20. Department of Pediatric and Adolescent Medicine, Sørlandet Sykehus Arendal, Arendal, Norway
21. Department of Medicine, Diakonhjemmet Hospital, Oslo, Norway
22. Medical Department, Innlandet Hospital Trust, Hamar, Norway
23. Medical Department, Innlandet Hospital Trust, Lillehammer, Norway
24. Pediatric Department, Innlandet Hospital Trust, Lillehammer, Norway
25. Department of Medicine, Lovisenberg Diakonale Sykehus, Oslo, Norway
26. Department of Medicine, Innlandet Hospital Trust, Gjøvik, Norway
27. Department of Medicine, Innlandet Hospital Trust, Elverum, Norway
28. Pediatric Department, Innlandet Hospital Trust, Elverum, Norway
29. Department of Medicine, Kongsberg Hospital, Vestre Viken Hospital Trust, Kongsberg, Norway
30. Department of Medicine, Kongsvinger Hospital, Kongsvinger, Norway
31. Department of Medicine, Notodden Hospital, Notodden, Norway
32. Department of Medicine, Sørlandet Hospital Flekkefjord, Flekkefjord, Norway