1. BIOMED Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
2. REVAL Rehabilitation Research Center, PHL University College, Hasselt, Belgium
3. Rehabilitation and MS Center, Overpelt, Belgium
4. De Mick, Rehabilitation Center, Brasschaat, Belgium
5. Department of Rehabilitation Sciences, KU Leuven, Heverlee, Belgium