1. From the University of Texas Health Science Center, Houston, Tex (H.V.A.); Sutter Pacific Heart Center, San Francisco, Calif (R.E.S.); Kaiser Permanente Health System, Oakland, Calif (R.G.B.); Rush Medical College, Chicago, Ill (L.W.K.); Harbor-UCLA Medical Center, Torrance, Calif (C.R.M.); Wake Forest University, Winston-Salem, NC (M.A.K.); Washington University, St Louis, Mo (R.J.K.); Cornell Medical Center, New York, NY (M.J.W.); University of North Carolina, Chapel Hill, NC (S.C.S.); and Emory...