1. Division of Vascular and Endovascular Surgery, Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts
2. Division of Vascular and Endovascular Therapy, Department of Surgery, Maine Medical Center, Portland
3. Section of Vascular Surgery and The Dartmouth Institute, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire
4. Division of Vascular and Surgery and Endovascular Therapy, Department of Surgery, University Hospitals Cleveland Medical Center, Cleveland, Ohio
5. Division of Vascular Surgery and Endovascular Therapy, Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia
6. Division of Vascular Surgery, Department of Surgery, Indiana University School of Medicine, Indianapolis
7. Division of Vascular and Endovascular Surgery, Department of Surgery, University of California San Diego Health System, San Diego