1. Department of Neurology University Groningen, University Medical Center Groningen Groningen Netherlands
2. Department of Neurology Haga Teaching Hospital The Hague The Netherlands
3. Institute of Neurogenetics University of Lübeck Lübeck Germany
4. Edmond J. Safra Program in Parkinson's Disease Toronto Western Hospital, University of Toronto Toronto Ontario Canada
5. Epilepsy Research Center, Department of Medicine University of Melbourne, Austin Health Heidelberg Victoria Australia
6. Department of Neurology Mayo Clinic Scottsdale Arizona USA
7. Kyoto University Graduate School of Medicine Kyoto Japan
8. Department of Genetics University of Groningen, University Medical Centre Groningen Groningen The Netherlands