1. Section of Emergency Medicine, Baylor College of Medicine, Houston, TX
2. Ahmanson‐UCLA Cardiomyopathy Center, Ronald Reagan‐UCLA Medical Center, Los Angeles, CA
3. Heart & Vascular Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
4. Duke Clinical Research Institute, Duke University School of Medicine, Durham, NC
5. Department of Clinical Neurosciences, Hotchkiss Brain Institute, University of Calgary, Alberta, Canada
6. Department of Emergency Medicine, University of Texas Southwestern, Dallas, TX
7. Department of Cardiology, Duke University Medical Center, Durham, NC
8. Department of Neurology, Duke University Medical Center, Durham, NC
9. Department of Biostatistics and Bioinformatics, Duke University School of Medicine, Durham, NC
10. Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA