1. Barrow Neurological Institute, Phoenix, AZ, USA
2. The Eleanor and Lou Gehrig ALS Center, The Neurological Institute, New York, NY, USA
3. Montreal Neurological Institute, Montreal, QC, Canada
4. University of Texas Health Science Center, San Antonio, TX, USA
5. Johns Hopkins School of Medicine, Baltimore, MD, USA
6. Washington University School of Medicine, St. Louis, MO, USA
7. Cytokinetics, Inc, South San Francisco, CA, USA
8. Indiana University School of Medicine, Indianapolis, IN, USA
9. Atrium Health Neurosciences Institute–Carolinas Neuromuscular/ALS MDA Care Center, Charlotte, NC, USA
10. Wake Forest Health Sciences, Winston-Salem, NC, USA
11. CHU de Québec, Université Laval, Quebec, Canada
12. Medical College of Wisconsin, Milwaukee, WI, USA
13. University of Michigan, Ann Arbor, MI, USA
14. The ALS & Neuromuscular Center, UCI Health, Orange, CA, USA
15. Trinity College, Beaumont Hospital, Dublin, Ireland
16. St. Louis University, St. Louis, MO, USA
17. Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA
18. Texas Neurology, Dallas, TX, USA
19. Royal Brisbane and Women's Hospital, Herston, Australia
20. University of Alberta, Edmonton, AB, Canada
21. Oregon Health & Science University, Portland, OR, USA
22. Royal Prince Alfred Hospital, University of Sydney, Sydney, Australia
23. Wexner Medical Center, Ohio State University, Columbus, OH, USA
24. University of Calgary, Calgary, AB, Canada
25. St. Joseph's Hospital and Medical Center, Neurological Institute, AZ, USA Barrow Phoenix
26. Centre Hospitalier de l’Université de Montréal, Montreal, QC, Canada
27. Hospital San Rafael, Madrid, Germany
28. Perron Institute, Department of Neurology, Fiona Stanley Hospital, The University of Notre Dame Australia, Murdoch University, Perth, Australia
29. Mayo Clinic Florida, Jacksonville, FL, USA
30. Neurology Associates, Lincoln, NE, USA
31. Cleveland Clinic, Cleveland, OH, USA
32. University of Florida, Jacksonville, FL, USA
33. University of Colorado Denver, Aurora, CO, USA
34. University of Chicago Medical Center, Chicago, IL, USA
35. University of Saskatchewan, Saskatoon, SK, Canada
36. Flinders Medical Centre, Bedford Park, Australia
37. London Health Sciences Centre, London, ON, Canada
38. Penn State Hershey Medical Center, Hershey, PA, USA
39. University of Kansas Medical Center, Kansas City, KS, USA
40. West Virginia University, Morgantown, WV, USA
41. University of Iowa, Iowa City, IA, USA
42. Department of Neurology, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht, The Netherlands
43. University of South Florida, Tampa, FL, USA
44. Westmead Hospital, Sydney, Australia
45. University of Washington, Seattle, WA, USA
46. Duke University School of Medicine, Durham, NC, USA
47. University of Florida, Gainesville, FL, USA
48. ALS/Neuromuscular Clinic Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada