1. From the Medical University of South Carolina, Charleston (M.R.G.); Scripps Memorial Hospital, La Jolla, Calif (S. Higgins); University of Utah, Salt Lake City (R.K.); Chippenham Medical Center, Richmond, Va (F.R.G.); Saint Joseph’s Hospital of Atlanta, Atlanta, Ga (H.K.); Hahnemann University, Philadelphia, Pa (S. Hennen); Baylor College of Medicine, Houston, Tex (J.P.); University of Michigan, Ann Arbor (S.A.S.); and Guidant Corporation, St Paul, Minn (D.B., S. Hahn).