[1] Norwegian Institute of Public Health,Institute of Health and Society
[2] University of Oslo,Department of Global Public Health and Primary Care
[3] University of Bergen,Department of Clinical Science
[4] University of Bergen,Department of Rheumatology
[5] Haukeland University Hospital,Department of Health and Care Sciences
[6] UiT The Arctic University of Norway,Department of Clinical Medicine
[7] UiT The Arctic University of Norway,Division of Internal Medicine
[8] University Hospital of North Norway Tromsø,Department of Public Health and General Practice
[9] Norwegian University of Science and Technology,Department of Obstetrics and Gynecology
[10] St. Olavs Hospital,undefined