1 Unit of Vascular Surgery, Policlinico G. Martino, University of Messina, Messina, Italy.
2 IRCCS Multimedica Sesto San Giovanni, Milan, Italy.
3 Unit of Vascular Surgery, Policlinico G. Martino, University of Messina, Via Consolare Valeria, Messina 98125, Italy. Electronic address: graziana.derone@gmail.com.