1. Cardiovascular Division, Department of Medicine Women's College Hospital and Peter Munk Cardiac Centre, Toronto General Hospital; University of Toronto; Toronto Ontario Canada
2. Division of Cardiology, Ahmanson-UCLA Cardiomyopathy Center; University of California; Los Angeles
3. Division of Cardiology; Washington University School of Medicine; St. Louis Missouri
4. Brigham and Women's Hospital Heart & Vascular Center and Harvard Medical School; Boston Massachusetts
5. Department of Emergency Medicine; Baylor College of Medicine; Houston Texas
6. Division of Cardiology, Department of Internal Medicine; University of New Mexico Health Sciences Center; Albuquerque
7. Duke Clinical Research Institute; Duke Medical Center; Durham North Carolina
8. Department of Clinical Neurosciences, Radiology, and Community Health Sciences, Hotchkiss Brain Institute, Cumming School of Medicine; University of Calgary; Alberta Canada
9. Division of Cardiology; Duke University School of Medicine; Durham North Carolina