1. Unit of Rheumatology, Karolinska University Hospital, Sweden
2. Division of Nursing, Department of Neurobiology, Care Science and Society, Karolinska Institutet, Sweden
3. Department of Medicine, Huddinge, Karolinska Institutet, Sweden
4. Institute of Environmental Medicine, Karolinska Institutet, Sweden
5. Research and Development Centre, Spenshult Hospital, Sweden
6. Department of Rheumatology, Clinical Sciences, Lund University, Sweden
7. Institute of Environmental Medicine, Unit of Immunology and Chronic Disease, Karolinska Institutet, Sweden
8. Department of Medicine, Solna, Karolinska Institutet, Sweden