1. Genetic Analysis AS; Oslo Norway
2. Karolinska Institute; Stockholm Sweden
3. Department of Gastroenterology; Northzealand Hospital; University of Copenhagen; Copenhagen Denmark
4. Department of Gastroenterology; Herlev Hospital; University of Copenhagen; Copenhagen Denmark
5. Clinic for Gastroenterology and Hepatology; University of Zürich; Zürich Switzerland
6. Department of Internal Medicine and Clinical Nutrition; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
7. Department of Microbiology and Immunology; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
8. EpiGen Institute; Campus Ahus; Institute of Clinical Medicine; University of Oslo; Lørenskog Norway
9. Section of Gastroenterology; Oslo University Hospital; Rikshospitalet Oslo Norway
10. Department of Chemistry, Biotechnology and Food Science; Norwegian University of Life Sciences; Aas Norway