1. Center of Rheumatic Research Aalborg (CERRA), Department of Rheumatology, Aalborg University Hospital, Aalborg, Denmark
2. Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
3. Section for Biostatistics and Evidence-Based Research, The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark
4. Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense University Hospital, Odense, Denmark
5. Department of Rheumatology, Aarhus University Hospital, Aarhus, Denmark
6. Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
7. Department of Rheumatology, Randers Regional Hospital, Randers, Denmark
8. Department of Rheumatology, Odense University Hospital, Odense, Denmark
9. Department of Rheumatology, Silkeborg Regional Hospital, Silkeborg, Denmark
10. Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
11. Unit of Epidemiology and Biostatistics, Aalborg University Hospital, Aalborg, Denmark