1. Central California Movement Disorders Pismo Beach California USA
2. Department of Neurology, Faculty of Medicine Tel Aviv Sourasky Medical Center Tel Aviv Israel
3. Department of Neurology Lebanon VA Medical Center Lebanon Pennsylvania USA
4. Department of Neurology Penn State Hershey Medical Center Hershey Pennsylvania USA
5. Edmond J. Safra Program in Parkinson's Disease Morton and Gloria Shulman Movement Disorders Clinic, Toronto Western Hospital, University Health Network Toronto Ontario Canada
6. Krembil Brain Institute University Health Network Toronto Ontario Canada
7. Howard Cohen Normal Pressure Hydrocephalus Program University Health Network, Toronto Western Hospital Toronto Ontario Canada
8. Department of Medicine, Division of Neurology University of Toronto Toronto Ontario Canada
9. Department of Neurosurgery Medical School Hannover Hannover Germany
10. Department of Neurology Istituto Auxologico Italiano IRCCS (Istituto di Ricovero e Cura a Carattere Scientifico) Milan Italy
11. Department of Pathophysiology and Transplantation University of Milan Milan Italy
12. Department of Human Neurosciences Sapienza University of Rome Rome Italy
13. University Health Network Memory Clinic Toronto Western Hospital Toronto Ontario Canada
14. Department of Neurology University of Alabama at Birmingham Huntsville Alabama USA
15. Movement Disorders Unit. Neurology Department Hospital Universitario Ramón y Cajal Madrid Spain
16. Department of Neurology Samsung Medical Center, Sungkyunkwan University School of Medicine Seoul South Korea
17. Department of Clinical Neuroscience Umeå University Umeå Sweden
18. Department of Clinical Neurosciences and Hotchkiss Brain Institute University of Calgary Calgary Alberta Canada