1. Department of Neurology, Leiden University Medical Center, Leiden, The Netherlands
2. Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
3. Department of Methodology and Statistics, Institute of Psychology, Leiden University, Leiden, The Netherlands
4. Leiden Institute for Brain and Cognition, Leiden University, Leiden, The Netherlands
5. Department of Neurology, Antonius Hospital, Woerden, The Netherlands