1. Department of Rehabilitation, Amsterdam Medical Center, Amsterdam, The Netherlands
2. Department of Rehabilitation, Radboud University Medical Center, Nijmegen, The Netherlands
3. School of Health Professions, Amsterdam University of Applied Sciences, Amsterdam, The Netherlands
4. Department of Neurosurgery, Amsterdam Medical Center, Amsterdam, The Netherlands
5. Department of Neurosurgery, Radboud University Medical Center, Nijmegen, The Netherlands