1. Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania
2. Division of Vascular Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
3. Department of Surgery, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, Pennsylvania
4. University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
5. Department of Cardiology, Johns Hopkins, Baltimore, Maryland
6. Division of Vascular Surgery, Stanford University School of Medicine, Stanford, California
7. Section of Vascular Surgery, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire
8. Dartmouth Institute for Health Policy and Clinical Practice, Lebanon, New Hampshire
9. Department of Surgery, UT Health San Antonio, University of Texas, San Antonio
10. Department of Surgery, South Texas Veterans Health Care System, San Antonio
11. Center for Health Equity Research and Promotion, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, Pennsylvania
12. Wolff Center at UPMC, Pittsburgh, Pennsylvania