1. Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm;
2. Department of Orthopaedics, Växjö Central Hospital, Region Kronoberg, and Department of Molecular Medicine and Surgery, Stockholm Sports Trauma Research Center, Karolinska Institutet, Stockholm;
3. Unit of Community Medicine, Department of Health, Medicine and Caring Sciences, Linköping University, Sweden, and Department of Orthopaedics, Hässleholm-Kristianstad Hospitals, Hässleholm;
4. Capio Artro Clinic, and Department of Molecular Medicine and Surgery, Stockholm Sports Trauma Research Center, Karolinska Institutet, Stockholm, Sweden