1. Rheumatology, Department of Clinical Sciences, Lund University , Malmö, Sweden
2. Center for Rheumatology, Academic Specialist Center , Region Stockholm, Stockholm, Sweden
3. Department of Rheumatology & Inflammation Research, Institute of Medicine, The Sahlgrenska Academy, University of Gotherburg , Gothenburg, Sweden
4. Department of Rheumatology, Skåne University Hospital , Malmö, Sweden
5. Department of Medicine, University of Cambridge , Cambridge, UK
6. Division of Rheumatology, Mayo Clinic College of Medicine and Science , Rochester, MN, USA
7. Department of Biomedical Science, Faculty of Health and Society, Malmö University , Malmö, Sweden