[1] St Franziskus Hosp Munster, Dept Vasc Surg, Hohenzollernring 72, D-48145 Munster, Germany
[2] Univ Munster, Clin Vasc & Endovasc Surg, Munster, Germany
[3] MedStar Union Mem Hosp, Div Vasc Surg, Baltimore, MD USA
[4] NYU, Langone Med Ctr, Dept Vasc Surg, New York, NY USA
[5] Cleveland Clin, Cleveland, OH 44106 USA
[6] Univ Kentucky, Dept Vasc Surg, Lexington, KY USA