1. Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, Pennsylvania2Penn Cardiovascular Outcomes, Quality, and Evaluation Research Center, Philadelphia, Pennsylvania
2. Veterans Affairs Eastern Colorado Healthcare System, Denver4University of Colorado School of Medicine, Aurora5Colorado Cardiovascular Outcomes Research Consortium, Denver6Department of Biostatistics and Informatics, Colorado School of Public Health, University of Colorado Denver, Aurora
3. Veterans Affairs Eastern Colorado Healthcare System, Denver4University of Colorado School of Medicine, Aurora5Colorado Cardiovascular Outcomes Research Consortium, Denver
4. Durham Veterans Affairs Medical Center, Durham, North Carolina8Duke University, Durham, North Carolina
5. Veterans Affairs North Texas Healthcare System, Dallas10University of Texas Southwestern Medical Center, Dallas
6. Ann Arbor Veterans Affairs Medical Center, Ann Arbor, Michigan12University of Michigan, Ann Arbor
7. Veterans Affairs Boston Healthcare System, Boston, Massachusetts14Brigham and Women’s Hospital Heart & Vascular Center, Boston, Massachusetts15Harvard Medical School, Boston, Massachusetts