1. Department of Clinical Sciences, Section of Rheumatology, Lund University, Lund, Sweden
2. Spenshult Research and Development Center, Halmstad, Sweden
3. Rheumatology, Capio Movement, Halmstad, Sweden
4. School of Business, Engineering and Science, Halmstad University, Halmstad, Sweden
5. School of Health and Welfare, Halmstad University, Halmstad, Sweden
6. Primary Health Care Unit, Department of Public Health and Community Medicine, Institute of Medicine, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden