1. First Operative Unit of Vascular Surgery, IRCCS Policlinico San Donato, San Donato Milanese, Milan, Italy

2. Department of Clinical Medicine and Surgery, University Federico II, Naples, Italy

3. Diagnostic and Interventional Radiology Unit, University of Milan, San Paolo Hospital, Milan, Italy

4. First Operative Unit of Vascular Surgery, IRCCS Policlinico San Donato, San Donato Milanese, Milan, Italy; University of Milan, Milan, Italy.