1. Department of Neurology Leiden University Medical Center Leiden The Netherlands
2. Department of Neurology Haaglanden Medical Center The Hague The Netherlands
3. Department of Biomedical Data Sciences Medical Statistics Leiden University Medical Center Leiden The Netherlands
4. Mathematical Institute Leiden University Leiden The Netherlands
5. Department of Neurology Amsterdam University Medical Center Amsterdam The Netherlands
6. Department of Neurology Erasmus Medical Center Rotterdam The Netherlands