1. From the Montreal Heart Institute, Montreal, Canada (D.M., J.-C.T., A.A., M.J., G.L., R.B.); Emory University School of Medicine, Atlanta, Ga (I.R.C., S.B.K.); Rhode Island Hospital, Brown University, Providence, RI (D.O.W.); and the Thoraxcenter, Erasmus University Rotterdam, Netherlands (P.W.S.).