1. Department of Neurology; Atrium Medical Center; Heerlen the Netherlands
2. Department of Neurology; Nijmegen Center for Evidence Based Practice; Radboud University Nijmegen Medical Center; Nijmegen the Netherlands
3. Department of General Practice; University of Groningen; University Medical Center Groningen; Groningen the Netherlands
4. Department of Primary and Community Care; Center for Family Medicine, Geriatric Care and Public Health; Radboud University Nijmegen Medical Center; Nijmegen the Netherlands
5. Department of Neurology; Donders Institute for Brain, Cognition and Behavior; Radboud University Nijmegen Medical Center; Nijmegen the Netherlands