1. From the Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands (M.B., A.C.T.N., L.A., G.N., S.H.E., D.A., N.A.M., M.J.S., J.J.B., V.D.); University of Ferrara, Ferrara and Fundation S. Maugeri Centro di Lumezzane, Brescia, Italy (M.B.); and the Department of Cardiology, Princess Alexandra Hospital, University of Queensland, Australia (A.C.T.N.).