1. Department of Neurological Sciences, Rush University Medical Center, Chicago, Illinois
2. Duke Clinical Research Institute, Durham, North Carolina
3. Division of Cardiology, Ronald Reagan UCLA Medical Center, Los Angeles, California
4. University of Calgary, Calgary, Alberta, Canada
5. Brigham and Women’s Hospital Heart & Vascular Center, Boston, Massachusetts
6. Harvard Medical School, Boston, Massachusetts
7. Massachusetts General Hospital, Boston
8. Department of Neurology, Ronald Reagan UCLA Medical Center, Los Angeles, California