1. From the Clinical Cardiology, Thrombosis Center, Department of Cardiothoracic and Vascular Sciences, University of Padova School of Medicine, Padova (P.V., C.U., D.G., I.S.); Merate General Hospital, Lecco (E.N.); University Hospital, Bologna (G.G.); General Hospital, Vimercate (L.L.); General Hospital, Lecco (D.V.); General Hospital, Cremona (T.S.); General Hospital, Macerata (F.R.); University of Firenze, Firenze (P.D.); and Geriatric Clinic, Padova (N.G.), Italy.