1. Stockholm Sports Trauma Research Center, Department of Molecular Medicine and Surgery Karolinska Institutet Stockholm Sweden
2. Department of Clinical Science and Education, Södersjukhuset Karolinska Institutet Vo Ortopedi, Södersjukhuset, Sjukhusbacken 10 11883 Stockholm Sweden
3. Department of Health, Medicine and Caring Sciences Linköping University Linköping Sweden