1. From the Departments of Cardiac, Thoracic, and Vascular Sciences (M.D.L., M.F., F.C., M.P.M., G.T., G.T., S.I., A.A., F.T.) and Medicine (F.A.), University of Padua, Padua, Italy; and Pathology Institute, Vicenza Hospital, Vicenza, Italy (E.G.S.D.).