1. Brain Center Rudolf Magnus and Center of Excellence in Rehabilitation Medicine, De Hoogstraat Rehabilitation and University Medical Center Utrecht, Utrecht, the Netherlands
2. Center of Excellence in Rehabilitation Medicine, Utrecht, the Netherlands
3. Department of Rehabilitation Medicine, Center for Rehabilitation, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
4. Rehabilitation Center Heliomare, Wijk aan Zee, the Netherlands
5. Department of Urology, University Medical Center Utrecht, Utrecht, the Netherlands