1. From Thoraxcenter, Rotterdam, the Netherlands (M.A., G.V.L., P.I.K., M.A.C., E.B., T.B., P.W.S.); the Academic Medical Center, Amsterdam, the Netherlands (M.V., J.J.P.); Onze Lieve Vrouwe Kliniek, Aalst, Belgium (B.d.B.); institutop Dante Pazzanesse de Cardiologia, San Pablo, Brasil (J.E.S.); and the Instituto Cardiovascular de Buenos Aires, Buenos Aires, Argentina (J.A.B.).