1. Danish Hospital for Rheumatic Diseases, University Hospital of Southern Denmark, Sønderborg, Denmark
2. Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
3. Research Unit of General Practice, Department of Public Health, University of Southern Denmark, Odense, Denmark
4. Research unit of User Perspectives and Community-based Interventions, Department of Public Health, University of Southern Denmark mark, Odense, Denmark
5. Section of Rheumatology, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
6. Hospital of Southern Jutland, University Hospital of Southern Denmark, Aabenraa, Denmark