Affiliations

• ¹ Department of Gastroenterology, Akershus University Hospital, Lørenskog 1478, Norway. Electronic address: krikjo@online.no.
• ² Faculty of Medicine, University of Oslo, Oslo, Norway; Department of Gastroenterology, Oslo University Hospital, Oslo, Norway; Centre for Immune Regulation, Department of Immunology, Oslo, Norway.
• ³ Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway.
• ⁴ Faculty of Medicine, University of Oslo, Oslo, Norway; Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway.
• ⁵ Department of Gastroenterology, Akershus University Hospital, Lørenskog 1478, Norway; Faculty of Medicine, University of Oslo, Oslo, Norway.