1 Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy; Section of Vascular Surgery, Cardio Thoracic Vascular Department, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. Electronic address: [email protected].
2 Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy.
3 Department of Cardiac Surgery, University of Michigan, Ann Arbor, Mich.
4 Cardiovascular Center, University of Michigan, Ann Arbor, Mich.