1. School of Vascular Surgery, Università degli Studi di Milano, Italy
2. Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
3. Operative Unit of Vascular Surgery, IRCCS Ospedale Maggiore Policlinico, Milan, Italy
4. Operative Unit of Neuroradiology, IRCCS Ospedale Maggiore Policlinico, Milan, Italy