University of Oslo - Division of Emergencies and Critical Care, University of Oslo - Department of Research Support for Clinical Trials, University of Oslo - Oslo University Hospital, University of Oslo - Division of Emergencies and Critical Care, University of Oslo - Department of Immunology and Transfusion Medicine, University of Oslo - Institute of Clinical Medicine, University of Oslo - Institute of Clinical Medicine, Vestre Viken Hospital Trust, Diakonhjemmet Hospital, Sørlandet Hospital, Innlandet Hospital, University Hospital North Norway, University of Stavanger - Stavanger University Hospital, University of Oslo - Institute of Clinical Medicine, Vestre Viken Hospital Trust, University of Oslo - Division of Emergencies and Critical Care, University of Oslo - Oslo University Hospital, District General Hospital of Førde - Section for Rheumatology, Haugesund Hospital, Vestre Viken Hospital Trust, Vestre Viken Hospital Trust, Møre og Romsdal Hospital Trust, Telemark Hospital Trust, Haraldsplass Deaconess Hospital, Sørlandet Hospital, Møre & Romsdal Hospital Trust - Molde Hospital - 8Department of Internal Medicine, Innlandet Hospital Trust, Nord-Trøndelag Hospital Trust, University of Oslo - Department of Immunology and Transfusion Medicine, University of Oslo - Institute of Clinical Medicine, University of Oslo - Department of Immunology and Transfusion Medicine, Trondheim University Hospital, Akershus University Hospital - Department of Infectious Diseases, Lovisenberg Diaconal Hospital - Department of Medicine, University of Oslo - Institute of Clinical Medicine, University of Bergen - Department of Clinical Science, Østfold Hospital Kalnes - Department of Infectious Diseases, University of Oslo - Oslo University Hospital, University of Oslo - Institute of Clinical Medicine, University of Oslo - Institute of Clinical Medicine, University of Oslo - Institute of Clinical Medicine, University of Oslo - Section for Clinical Immunology and Infectious Diseases and University of Oslo - Institute of Clinical Medicine

Sorlandet Hospital - Research Department, Martina Hansen Hospital - Department of Rheumatology, Diakonhjemmet Hospital - Division of Rheumatology and Research, University of Bergen - Bergen Group of Epidemiology and Biomarkers in Rheumatic Disease, Haugesund Hospital for Rheumatic Diseases, Lillehammer Hospital for Rheumatic Diseases, Betanien Hospital - Department of Rheumatology, Trondheim University Hospital - Department of Rheumatology, University Hospital of North Norway - Department of Rheumatology, District General Hospital of Førde - Section for Rheumatology and Sorlandet Hospital - Research Department

affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, University of Copenhagen - Department of Clinical Medicine, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Karolinska Institutet - Clinical Epidemiology Division, affiliation not provided to SSRN, Institute of Rheumatology, Institute of Rheumatology, University of Medicine and Pharmacy Carol Davila Bucharest, University of Copenhagen - Department of Clinical Medicine, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Diakonhjemmet Hospital, District General Hospital of Førde - Section for Rheumatology, affiliation not provided to SSRN, University of Göttingen - University Medical Centre, Landspitali University Hospital, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, - Hospital General Universitario Gregorio Marañón, University of Aberdeen - Aberdeen Centre for Arthritis and Musculoskeletal Health (Epidemiology Group), affiliation not provided to SSRN and University of Copenhagen