1. From the Departments of Cardiac, Thoracic, and Vascular Sciences (M.P.M., L.L., B.B., A.Z., F.M., M.S., I.R., F.T., G.T., L.C., G.B., S.I., D.C.), Radiology (F.C.), and Medical-Diagnostic Sciences and Special Therapies (C.B., G.T.), University of Padua Medical School, Padua, Italy.