1. Department of Health Sciences; Luleå University of Technology; Luleå Sweden
2. Department of Physiotherapy; Sunderby Hospital; Luleå Sweden
3. Department of Rheumatology; Sunderby Hospital; Luleå Sweden
4. Division of Rheumatology, Department of Internal Medicine III; Medical University of Vienna and Division of Occupational Therapy, Department of Health, University of Applied Sciences - FH Campus Wien; Vienna Austria
5. Department of Health Sciences; Lund University; Lund Sweden
6. Department of Neurobiology, Care Sciences and Society; Karolinska Institutet; Stockholm Sweden