1. Department of Neurology, Nijmegen Centre for Evidence Based Practice, Radboud University Nijmegen Medical Centre, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands
2. Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen Medical Centre, The Netherlands
3. Department of Rehabilitation Medicine, Nijmegen Centre for Evidence Based Practice, Radboud University Nijmegen Medical Centre, The Netherlands
4. IQ Scientific Institute for Quality of Healthcare, Nijmegen Centre for Evidence Based Practice, Radboud University Nijmegen Medical Centre, The Netherlands