1. From the Interventional Cardiology Unit, San Donato Hospital, Arezzo, Italy (I.P., L.B.); Department of Cardiovascular Sciences, Policlinico A. Gemelli, Catholic University of the Sacred Heart, Rome, Italy (M.G., G.L.D.M., R.V., P.B., G.B., F.C., M.M.); and Interventional Cardiology Unit, San Giovanni-Addolorata Hospital, Rome, Italy (L.D.V., F.P.).