1. Division of General and Foregut Surgery, IRCCS Policlinico San Donato, University of Milan, Milan, Italy.
2. Division of Vascular Surgery, Ospedale Maggiore Policlinico di Milano, Milan, Italy.
3. Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy.
4. Department of Clinical and Community Sciences, University of Milan, Milan, Italy.
5. Department of Biomedical Sciences for Health, University of Milan, Milan, Italy.