1. Harvard Medical School, Boston, Massachusetts
2. Virginia Commonwealth University, Richmond, Virginia
3. Teva Pharmaceuticals Ltd, Frazer, Pennsylvania
4. Center for Human Experimental Therapeutics, University of Rochester, Rochester, New York
5. CSD Biostatistics, Tucson, Arizona
6. Duke University, Durham, North Carolina
7. Huntington Study Group, Rochester, New York
8. Centre of Molecular Medicine and Therapeutics, University of British Columbia, Vancouver, Canada
9. University of Rochester, Rochester, New York
10. Wake Forest School of Medicine, Winston-Salem, North Carolina
11. Medical University of South Carolina, Charleston, South Carolina
12. Hereditary Neurological Disease Centre, Wichita, Kansas
13. Baylor College of Medicine, Houston, Texas
14. Vanderbilt University Medical Center, Nashville, Tennessee
15. University of Alabama School of Medicine, Birmingham, Alabama
16. Columbia University, New York, New York
17. Boston University Medical Campus, Boston, Massachusetts
18. University of Florida College of Medicine, Gainesville, Florida
19. Georgetown University, Washington, DC
20. Washington University School of Medicine, St Louis, Missouri
21. Greenville Health System, Greenville, South Carolina22University of South Carolina Medical School, Greenville, South Carolina
22. Johns Hopkins University School of Medicine, Baltimore, Maryland
23. Ottowa Parkinson’s and Neurodegenerative Disorders Clinic, Ottawa, Canada
24. University of Miami Health, Miami, Florida
25. University of Iowa Carver College of Medicine, Iowa City, Iowa
26. University of Kansas Medical Center, Kansas City
27. Emory University, Atlanta, Georgia
28. Albany Medical College, Albany, New York
29. Rocky Mountain Movement Disorders Center, Englewood, Colorado
30. University of Washington, Seattle, Washington
31. Centre hospitalier de l'Université de Montréal, Montreal, Québec, Canada
32. Hôpital Notre-Dame, Montréal, Québec, Canada
33. North York General Hospital, Toronto, Canada
34. North York General Hospital, Toronto, Canada35University of Toronto, Toronto, Ontario, Canada36Toronto General Research Institute, University Health Network, Toronto, Ontario, Canada
35. North York General Hospital, Toronto, Canada35University of Toronto, Toronto, Ontario, Canada
36. Cooper University Hospital, Camden, New Jersey
37. The Movement Disorders Clinic Oklahoma, Tulsa
38. South Shore Neurologic Associates, Islip, New York
39. Rutgers Robert Wood Johnson Medical School, New Brunswick, New Jersey
40. Parkinson’s Institute and Clinical Center, Sunnyvale, California
41. Indiana University School of Medicine, Indianapolis
42. University of Louisville, Louisville, Kentucky
43. University of Cincinnati, Cincinnati, Ohio
44. University of Utah Health Care, Salt Lake City, Utah46Banner Sun Health Research Institute, Sun City, Arizona
45. Medical College of Wisconsin, Milwaukee, Wisconsin
46. University of Vermont Medical Center, Burlington, Vermont
47. University of Nevada School of Medicine, Reno, Nevada
48. Evergreen Neuroscience Institute, Kirkland, Washington
49. Banner Alzheimer’s Institute, Phoenix, Arizona
50. Feinstein Institute for Medical Research, Manhasset, New York
51. Harvard University, Boston, Massachusetts