1. Department of Gastroenterology, Akershus University Hospital, Lørenskog, Norway
2. Department of Gastroenterology, Oslo University Hospital, Ullevål, Oslo, Norway
3. Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
4. Department of Immunology, Oslo University Hospital, Oslo, Norway
5. Institute of Clinical Medicine, Campus Ahus, University of Oslo, Oslo, Norway
6. Health Services Research Unit, Akershus University Hospital, Lørenskog, Norway; ;
7. Center for treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Oslo, Norway Rheumatology and Research, Diakonhjemmet Hospital, Oslo, Norway
8. Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway
9. KG Jebsen Centre for B cell Malignancies, University of Oslo, Oslo, Norway
10. Department of Gastroenterology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
11. ImmunoLingo Convergence Center, University of Oslo, Oslo, Norway