1. Cardiovascular Imaging Program, Departments of Medicine (Cardiovascular Division) and Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
2. University of Washington, Seattle, WA
3. Mid‐Atlantic Permanente Medical Group, McLean, VA
4. Cardiovascular Division, Brigham and Women's Hospital, Boston, MA
5. Cardiac Surgery Division, Brigham and Women's Hospital, Boston, MA