[1] Univ Washington, Dept Surg, 1959 NE Pacific St,Box 356410, Seattle, WA 98195 USA
[2] Emory Univ, Dept Surg, Atlanta, GA 30322 USA
[3] Univ Maryland, Dept Surg, Baltimore, MD 21201 USA
[4] Univ South Carolina, Sch Med, Dept Surg Palmetto Hlth, Columbia, SC USA
[5] Univ Pittsburgh, Med Ctr, Div Vasc Surg, Pittsburgh, PA USA
[6] Westchester Med Ctr, Dept Surg, Pittsburgh, PA USA
[7] Univ Calif Davis, Div Vasc Surg, Sacramento, CA 95817 USA
[8] Ottawa Hosp, Div Vasc & Endovasc Surg, Ottawa, ON, Canada
[9] Univ Ottawa, Ottawa, ON, Canada
[10] Mayo Clin, Div Prevent Med, Rochester, MN USA