1. Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, the Netherlands
2. Department of Neurology, Erasmus MC University Medical Center, Rotterdam, the Netherlands
3. Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
4. Department of Neurology, Montreal General Hospital, Montreal, Quebec, Canada
5. Inspectorate for Health Care, The Hague, the Netherlands
6. Department of Radiology, Erasmus MC University Medical Center, Rotterdam, the Netherlands