1. Department of Rehabilitation, Physiotherapy and Sports, Brain Center Rudolf Magnus; University Medical Center Utrecht; Postbus, 85500, 3508, GA Utrecht The Netherlands
2. Center of Excellence for Rehabilitation Medicine, Brain Center Rudolf Magnus; University Medical Center Utrecht, Utrecht University and De Hoogstraat Rehabilitation; Utrecht The Netherlands
3. Department of Neurology and Neurosurgery; Brain Center Rudolf Magnus, University Medical Center Utrecht; Utrecht The Netherlands
4. Department of Rehabilitation Medicine; University of Groningen, University Medical Center Groningen; Groningen The Netherlands