1. Department of Neuroscience Rita Levi Montalcini, University of Torino, Torino, Italy
2. Texas Tech University Health Sciences Center El Paso, El Paso
3. Rush University Medical Center, Chicago, Illinois
4. Consultorio de Neurogenética-Centro Universitario de Neurologia y Division Neurologia-Hospital J. M. Ramos Mejia-CONICET, Buenos Aires, Argentina
5. Genomic Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
6. Gardner Family Center for Parkinson's Disease and Movement Disorders, Department of Neurology, University of Cincinnati, Cincinnati, Ohio
7. Abbott Laboratories, Austin, Texas
8. The London Clinic, London, United Kingdom
9. Department of Neurology, Leiden University Medical Center, Leiden, the Netherlands
10. Department of Neurology, Haga Teaching Hospital, The Hague, the Netherlands
11. Morton and Gloria Shulman Movement Disorders Clinic, Edmond J. Safra Program in Parkinson’s Disease, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada
12. Division of Neurology, University of Toronto, Toronto, Ontario, Canada
13. Krembil Research Institute, Toronto, Ontario, Canada