1. From the Department of Anesthesiology (M.F.N., H.P.G., J.P.M., W.D.W., J.G.R.), Department of Surgery (K.L.), Department of Medicine, Division of Neurology (D.T.L.), Department of Medicine, Division of Cardiology (D.B.M.), and Department of Psychiatry and Behavioral Sciences (J.A.B.), Duke University Medical Center, Durham, NC.