1. Rheumatology, Department of Clinical Sciences, Lund University , Malmö
2. Center for Rheumatology, Academic Specialist Center , Region Stockholm, Stockholm
3. Department of Rheumatology and Inflammation Research, The Sahlgrenska Academy, University of Gothenburg, Institute of Medicine , Gothenburg
4. Department of Rheumatology, Skåne University Hospital , Lund, 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 Immunotechnology, Lund University , Lund, Sweden