[1] Univ Hosp Essen, West German Heart & Vasc Ctr Essen, Dept Cardiol & Vasc Med, Hufelandstr 55, D-45147 Essen, Germany
[2] Univ Hosp Zurich, Dept Angiol, Zurich, Switzerland
[3] Asklepios Med Sch, Dept Vasc & Endovasc Surg, Asklepios Clin Wandsbek, Hamburg, Germany
[4] Ninewells Hosp & Med Sch, Div Cardiovasc Res, Dundee, Scotland
[5] Univ Hosp Hamburg Eppendorf, Univ Heart & Vasc Ctr, Dept Angiol, Hamburg, Germany
[6] Med Univ Graz, Div Angiol, Graz, Austria
[7] Johannes Gutenberg Univ Mainz, Univ Med Ctr, Dept Angiol, Mainz, Germany
[8] Univ Surrey, Dept Clin & Expt Med, Guildford, Surrey, England
[9] Surrey & Sussex Healthcare NHS Trust, Vasc Dept, East Surrey Hosp, Redhill, Surrey, England
[10] GRN Hosp Weinheim, Cardiol & Vasc Med, Weinheim, Germany
[11] Med Univ Vienna, Div Angiol, Dept Med 2, Vienna, Austria
[12] Univ Kiel, Univ Hosp Schleswig Holstein, Dept Internal Med 5, Kiel, Germany