1. Department of Health, Medicine and Caring Sciences, Linköping University, Norrköping, Sweden
2. Department of Activity and Health and Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
3. Department of Rheumatology in Östergötland, and Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
4. Pain and Rehabilitation Centre and Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden