1. Department of Cardiovascular Medicine Brigham and Women's Hospital, Harvard Medical School Boston Massachusetts USA
2. Richard and Susan Smith Center for Outcomes Research in Cardiology, Beth Israel Deaconess Medical Center Harvard Medical School Boston Massachusetts USA
3. Surgical Services Louis Stokes Cleveland VA Medical Center Cleveland Ohio USA
4. Case School of Medicine Case Western Reserve University Cleveland Ohio USA
5. Massachusetts Veterans Epidemiology Research and Information Center (MAVERIC) VA Boston Healthcare System Boston Massachusetts USA
6. Facultad de Medicina Universidad Diego Portales Santiago Chile
7. Division of Cardiac Surgery University of Pittsburgh Pittsburgh Pennsylvania USA
8. Division of Interventional Cardiology NYU Langone Health New York USA
9. Hinda and Arthur Marcus Institute for Aging Research Hebrew SeniorLife, Harvard Medical School Boston Massachusetts USA
10. New England Geriatric Research, Education, and Clinical Center (GRECC) VA Boston Healthcare system Boston Massachusetts USA
11. Wolff Center University of Pittsburgh Medical Center Pittsburgh Ohio USA
12. Center for Health Equity Research and Promotion Veteran Affairs Pittsburgh Healthcare System Pittsburgh Ohio USA
13. Division of Aging, Brigham and Women's Hospital Harvard Medical School Boston Massachusetts USA