1. Copenhagen Center for Arthritis Research (COPECARE) Center for Rheumatology and Spine Diseases Centre of Head and Orthopaedics Rigshospitalet Glostrup Denmark
2. Department of Rheumatology Skaraborg Hospital Skövde Sweden
3. The DANBIO Registry Copenhagen Denmark
4. Department of Clinical Medicine Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
5. Corporal Michael J. Crescenz VA Medical Center University of Pennsylvania Philadelphia PA USA
6. Department of Radiology Copenhagen University Hospital Frederiksberg Frederiksberg Denmark
7. The Parker Institute Copenhagen University Hospital Frederiksberg Frederiksberg Denmark
8. Department of Radiology Rigshospitalet Glostrup Denmark
9. Center for Rheumatology and Spine Diseases Copenhagen University Hospital Gentofte Gentofte Denmark
10. Center for Rheumatology and Spine Diseases Nordsjællands Hospital Hillerød Denmark
11. Copenhagen Lupus and Vasculitis Clinic Center for Rheumatology and Spine Diseases Rigshospitalet Copenhagen Denmark
12. Center for Rheumatology and Spine Diseases Copenhagen University Hospital Frederiksberg Frederiksberg Denmark
13. Department of Radiology Copenhagen University Hospital Herlev Herlev Denmark
14. Zitelabs Aps Copenhagen Denmark