1. Division of Cardiology, Rocky Mountain Regional VA Medical Center, University of Colorado, Denver, CO, USA
2. Department of Medicine, Jacobi Medical Center, Albert Einstein College of Medicine, Bronx, NY, USA
3. Division of Neurological Surgery, Emory University Hospital, Atlanta, GA, USA
4. Vascular Center and Division of Cardiovascular Medicine, University of California, Davis, Sacramento, CA, USA
5. The Warren Alpert Medical School of Brown University and Lifespan Cardiovascular Institute, Providence, RI, USA
6. Penn Cardiovascular Outcomes, Quality, & Evaluative Research Center, Cardiovascular Medicine Division, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA