1. Faculty of Medicine and Health School of Health Sciences, Örebro University Örebro Sweden
2. Department of Orthopaedics, Faculty of Medicine and Health Örebro University Örebro Sweden
3. Faculty of Medicine and Health Sciences, Department of Health, Medicine and Caring Sciences Linköping University Linköping Sweden
4. Department of Public Health and Caring Sciences Uppsala University Uppsala Sweden
5. Department of Clinical Science and Education Södersjukhuset, Karolinska Institutet Stockholm Sweden
6. University Health Care Research Center and Department of Orthopaedics Faculty of Medicine and Health, Örebro University Örebro Sweden