From the Quebec Heart Institute, Laval University, Ste-Foy, Canada (G.R.D.); the Hamilton General Hospital, McMaster University, Hamilton, Canada (S.Y., Q.Y., J.B., E.M.L.); the Montreal Heart Institute, University of Montreal, Montreal, Canada (M.G.B.); the Centre Hospitalier de Lanaudière, Joliette, Canada (S.K.); and St Vincent Hospital, Portland, Ore (J.G.). (At 2001-07-31)
