1. Endovascular Section, Lenox Hill Heart & Vascular Institute of NY, New York, New York
2. Division of Vascular Surgery, UMDNJ-New Jersey Medical School, Newark, New Jersey
3. Division of Vascular Surgery, Harbor-UCLA Medical Center, Torrance, California
4. Department of Cardiovascular and Endovascular Surgery, Arizona Heart Institute and Arizona Heart Hospital, Phoenix, Arizona
5. Division of Vascular Surgery, Stanford University Medical Center, Stanford, California
6. Pittsburgh Vascular Institute, Shadyside Hospital, Pittsburgh, Pennsylvania, USA