1. Department of Rehabilitation Medicine; VU University Medical Center; Amsterdam Movement Sciences; Amsterdam the Netherlands
2. Department of Clinical Applications and Research; Motek Medical BV; Amsterdam the Netherlands
3. Faculty of Medicine and Life Sciences; REVAL Rehabilitation Research Center - BIOMED Biomedical Research Institute; Hasselt University; Diepenbeek Belgium
4. Department of Rehabilitation Medicine; University Medical Center Groningen; University of Groningen; Groningen the Netherlands