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