1. Department of Health Sciences; Lund University; Lund Sweden
2. Section of Rheumatology, Department of Medicine; Helsingborg Hospital; Helsingborg Sweden
3. Department of Clinical Science, Section of Rheumatology, Faculty och Medicine; Lund University; Lund Sweden
4. School of Health and Welfare; Jönköping University; Jönköping Sweden
5. The PRO-CARE Group, School of Health & Society; Kristianstad University; Kristianstad Sweden