1. University of North Carolina, Chapel Hill
2. Yale School of Medicine, New Haven, Connecticut
3. University at Buffalo, Buffalo, New York
4. Ohio State University, Columbus
5. University of South Florida, Tampa
6. Infirmary Health, Mobile, Alabama
7. University of Miami, Miami, Florida
8. Ra Pharmaceuticals Inc, Cambridge, Massachusetts
9. George Washington University, Washington, DC
10. University of Kansas, Fairway
11. Wesley Neurology Clinic, Cordova, Tennessee
12. University of Utah, Salt Lake City
13. Montreal Neurological Institute, Montreal, Quebec, Canada
14. Massachusetts General Hospital, Boston
15. University of California, Irvine, Orange
16. Lahey Hospital, Burlington, Massachusetts
17. University of Texas Southwestern, Dallas, Irving
18. Hospital for Special Surgery, New York, New York
19. Center for Neurological Disorders, St Francis Hospital at Ascension, Milwaukee, Wisconsin
20. Wayne State University, Detroit, Michigan
21. Rush University, Chicago, Illinois
22. London Health Sciences Center, London, Ontario, Canada
23. University of Florida, Jacksonville
24. Michigan State University, East Lansing
25. University of Alberta, Edmonton, Alberta, Canada
26. Mount Sinai Hospital, New York, New York
27. Allegheny Neurological Associates, Pittsburgh, Pennsylvania