1. Department of Surgery, East Tennessee State University, James H. Quillen College of Medicine and VA Medical Center, Johnson City, TN
2. Department of Surgery, East Tennessee State University, James H. Quillen College of Medicine and VA Medical Center, Johnson City, TN; Department of Surgery, Division of Vascular Surgery, East Tennessee State University, James H. Quillen College of Medicine, PO Box 70575, Johnson City, TN 37614-0575;