1. Department of Medicine, Hospital of Helgeland, Mo i Rana, Norway;
2. Research Group of Gastroenterology and Nutrition, Institute of Clinical Medicine, Norwegian Arctic University, Tromsø, Norway;
3. Research Laboratory, Nordland Hospital, Bodø, Norway;
4. K.G. Jebsen TREC, University of Tromsø, Tromsø, Norway;
5. Clinical Pathology, University Hospital of North Norway, Tromsø, Norway;
6. Department of Immunology, Oslo University Hospital, Oslo, Norway;
7. K.G. Jebsen JIRC, University of Oslo, Oslo, Norway;
8. Centre of Molecular Inflammation Research, Norwegian University of Science and Technology, Trondheim, Norway