1. Department of Clinical Science, University of Bergen, Bergen, Norway
2. K.G. Jebsen Senter for Autoimmune Sykdommer, University of Bergen, Bergen, Norway
3. Department of Medicine, Haukeland University Hospital, Bergen, Norway
4. Hormone Laboratory, Haukeland University Hospital, Bergen, Norway
5. Bergen Spesialistsenter, Bergen, Norway
6. Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
7. Hormone Laboratory, Department of Medical Biochemistry, Oslo University Hospital Aker, Oslo, Norway