1. the Department of Medicine, Cardiology Division, Emory University School of Medicine (J.B.L., S.R., Z.G., D.G.H.), Atlanta, Ga; the Atlanta (Ga) Veterans Administration Medical Center (D.G.H.); the Department of Anesthesiology (M.T., B.A.F.), University of Alabama at Birmingham; and Medical Department B, Division of Cardiology (J.B.L.), Rigshospitalet, Denmark.