1. Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, Department of Neurology, Centre of Expertise for Parkinson & Movement Disorders, Nijmegen, the Netherlands
2. Radboud University Medical Center, Radboud Institute for Health Sciences, Scientific Centre for Quality of Healthcare, Centre of Expertise for Parkinson & Movement Disorders, Nijmegen, the Netherlands
3. Medical Decision Making, Department of Biomedical Data Sciences, Leiden University Medical Centre, Leiden, the Netherlands
4. University of Twente, Department of Health Technology and Services Research, Technical Medical Center, Enschede, the Netherlands