1. Rehabiliteringsmedicinska Kliniken, University Hospital, Linköping, Sweden
2. Formerly, Roessingh Centre for Rehabilitation, Roessingh Research & Development, Enschede, The Netherlands
3. Department of Development and Regeneration, KU Leuven – University of Leuven, Leuven, Belgium
4. Physical and Rehabilitation Medicine, University Hospitals Leuven, Leuven, Belgium
5. Division of Physiatry, Division of Medicine, University of Toronto, Toronto, Canada