1 Surgical Service, Vascular Section, Carl T Hayden Phoenix VA Medical Center, Department of Surgery, University of Arizona, Phoenix, Ariz.
2 Division of Vascular and Endovascular Surgery, Department of Surgery, University of Texas Health Science Center, San Antonio, and the South Texas Veterans Health Care System, San Antonio, Tex.
3 Division of Vascular Surgery, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, Calif. Electronic address: kwoo@mednet.ucla.edu.
4 Society for Vascular Surgery Quality and Performance Measures Committee, Chicago, Ill.
5 Division of Vascular Surgery, Department of Surgery, University of South Florida, Tampa, Fla.