From the Cardiology Unit, Azienda Ospedaliero Universitaria di Ferrara, Ferrara (S.B., V. Lodolini, R.P., P.C., C.T., A.E., C.P., G. Campo), the Cardiology Unit, Azienda Unità Sanitaria Locale (USL) IRCCS Reggio Emilia, S. Maria Nuova Hospital, Reggio Emilia (V.G., G.P.), the Cardiology Unit, Ospedale Maggiore (V. Lanzilotti, G. Casella, G.I.), and the Department of Biomedical and Neuromotor Sciences, University of Bologna (E.M.), Bologna, the Cardiovascular Department, Infermi Hospital, Rimini (A.S., M.M.), the Interventional Cardiology Unit, San Luigi Gonzaga University Hospital, Orbassano, and Rivoli Infermi Hospital ASL TO3, Turin (E.C., F.V.), the Cardiology Unit, Umberto I Hospital, ASP Siracusa, Siracusa (G.S.), S.C. Cardiologia, Ospedale Sant'Andrea, ASL5 Liguria, La Spezia (A.M., G. Caretta), the Cardiology Unit, Ospedale Civile di Baggiovara, Baggiovara (M.R.), Interventional Cardiology, Department of Cardio-Thoracic and Vascular Sciences, Ospedale dell'Angelo, Venice (M.B.), the Department of Cardiology, S. Maria delle Croci Hospital, Ravenna (L.F.), the Cardiovascular Department, Azienda USL Toscana Sud-Est, Misericordia Hospital, Grosseto (A.P.), the Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome (G.B.-Z.), and the Cardiology Unit, Ospedale Santa Maria Goretti, Latina (I.C.), Mediterranea Cardiocentro, Naples (G.B.-Z.), Maria Cecilia Hospital, Cotignola (P.C., D.D.), the Department of Clinical and Molecular Medicine, Sapienza University of Rome, Rome (E.B.), and the Interventional Cardiology Unit, Presidio Ospedaliero San Salvatore di Pesaro, Pesaro (M.T.) - all in Italy; Hospital Clínico San Carlos, Complutense University of Madrid (J.E.), Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), and Instituto de Investigación Hospital La Paz, University Hospital La Paz (R.M., A.J.-R.), Madrid, CIBERCV, Department of Cardiology, Hospital Clínico Universitario, Valladolid (I.A.S.), and CIBERCV, Cardiology Department, H. Universitario y Politécnico La Fe, Valencia (J.L.D.G.) - all in Spain; and the Institute of Cardiology, Jagiellonian University Medical College, Krakow, Poland (D.D.).