1. Division of Vascular Surgery and Endovascular Therapy, Michael E. DeBakey Department of Surgery, Baylor College of Medicine/Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas.
2. Health Services & Research Development, Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas.
3. Division of General Surgery, Michael E. DeBakey Department of Surgery, Baylor College of Medicine/Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas.