1. Division of Cardiology, University of Washington, Seattle, CO
2. Division of Cardiology, University of Colorado and VA Colorado Healthcare System, Denver, CO
3. Department of Cardiology, Kaiser Permanente, San Francisco, CA
4. Division of Cardiology, Kaiser Permanante Mid‐Atlantic Medical Group, Washington, DC
5. Division of Cardiology, University of Wisconsin, Madison, WI
6. Division of Cardiology, University of Iowa, Iowa City, IA
7. Division of Cardiovascular Medicine, Massachusetts General Hospital, Boston, MA
8. Division of Cardiology, University of California, San Francisco, CA
9. San Francisco General Hospital, San Francisco, CA
10. Department of Emergency Medicine, University of California, San Francisco, CA
11. Division of Electrophysiology, University of California, San Francisco, CA
12. Division of Cardiovascular Medicine, Brigham and Women's Hospital/Harvard Medical School, Boston, MA
13. Cardiovascular Division, VA Boston Healthcare System, Boston, MA