1. From the Laboratory of Interventional Cardiology and Department of Cardiology, Clinica Mediterranea, Naples (C.B., D.D., A.F., B.R.); Laboratory of Interventional Cardiology, “Vita e Salute” University School of Medicine, San Raffaele Hospital, Milan (C.B., F.A., N.M., I.M., M.M., M.C., J.C., A.C.); and Institute of Medical Statistics and Biometry, University of Milan, Milan (E.B.), Italy.