1. Department of Medicine, San Francisco Veterans Affairs Medical Center, San Francisco, California
2. New England Geriatric Research, Education, and Clinical Center, Veterans Affairs Boston Healthcare System, Boston, Massachusetts
3. Northwest Health Services Research and Development Center of Excellence, Veterans Affairs Puget Sound Healthcare System, Seattle, Washington
4. Division of Cardiology, Denver Veterans Affairs Medical Center, Denver, Colorado 5Department of Medicine, Division of Cardiology, University of Colorado Health Sciences Center, Denver
5. New England Geriatric Research, Education, and Clinical Center, Veterans Affairs Boston Healthcare System, Boston, Massachusetts6Division of Cardiovascular Medicine, Veterans Affairs Boston Healthcare System, Boston, Massachusetts7Department of Medicine, Cardiovascular Division, Brigham and Women’s Hospital, Boston, Massachusetts8Department of Medicine, Harvard Medical School, Boston, Massachusetts
6. Department of Medicine, San Francisco Veterans Affairs Medical Center, San Francisco, California9Department of Medicine, University of California, San Francisco10Department of Epidemiology and Biostatistics, University of California, San Francisco