1. Department of Surgery, Peripheral Vascular Surgery Service, Walter Reed Army Medical Center, Washington, D.C.,
2. Department of Surgery, Peripheral Vascular Surgery Service, Walter Reed Army Medical Center, Washington, D.C.
3. Department of Surgery, Peripheral Vascular Surgery Service, Eisenhower Army Medical Center, Augusta, Georgia
4. Department of Vascular Surgery, University of Rochester Medical Center, Rochester, New York