1. Department of Public Health, Danish Centre for Health Economics, University of Southern Denmark, Odense, Denmark
2. AmbuFlex, Center for Patient-reported Outcomes, Hospital Unit West Jutland, Herning, Denmark
3. Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
4. Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
5. Department of Public Health, Aarhus University, Aarhus, Denmark
6. Department of Public Health and Rehabilitation Research, DEFACTUM, Central Denmark Region, Aarhus, Denmark
7. Department of Rheumatology, Aarhus University Hospital, Aarhus, Denmark