Benjamin Del Tatto1, Francois Saucy2. 1. Department of Vascular Surgery, CHUV, Lausanne, Switzerland; Department of Vascular Surgery and Renal Transplantation, NHC, Strasbourg, France. Electronic address: benjamin.deltatto@chru-strasbourg.fr. 2. Department of Vascular Surgery, CHUV, Lausanne, Switzerland.