1. Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland;
2. Department of Orthopaedics and Trauma, Tampere University Hospital, Tampere, Finland;
3. Faculty of Sport and Health Sciences, Neuromuscular Research Center, University of Jyväskylä, Jyväskylä, Finland;
4. Department of Rehabilitation Medicine and Department of Psychiatry, Amsterdam University Medical Centres, Amsterdam, The Netherlands;
5. Department of Physical Medicine and Rehabilitation, Central Finland Health Care District, Jyväskylä, Finland;
6. Department of Orthopaedics and Trauma, Central Finland Health Care District, Jyväskylä, Finland