1. From the Institute of Cardiology, Catholic University of the Sacred Heart, Rome, Italy (G.F., G.N., R.A.M., F.C.); Cardiovascular Pathology Institute, Gaithersburg, Md (M.N., F.D.K., R.V.); Interventional Cardiology, San Giovanni Hospital, Rome, Italy (F.P., M.T.M., V.R.); and CLI Foundation, Rome, Italy (F.P.).