[1] Democritus Univ Thrace, Univ Gen Hosp Evros, Dept Vasc Surg, Alexandroupolis, Greece
[2] Univ Athens, Attikon Univ Hosp, Dept Vasc Surg, Athens, Greece
[3] Pennine Acute Hosp NHS Trust, Royal Oldham Hosp, Dept Vasc & Endovasc Surg, Manchester, Lancs, England
[4] Democritus Univ Thrace, Univ Gen Hosp Evros, Dept Internal Med 2, Alexandroupolis, Greece