1. From the Division of Cardiothoracic Anesthesiology and Critical Care Medicine, Department of Anesthesiology (M.S., B.G.P.-B., A.D.S., M.S.-S., J.P.M.); the Duke Clinical Research Institute (U.D.P., P.S.D.), Division of Thoracic Surgery; the Department of Surgery (P.K.S.); and the Division of Biostatistics, Duke Comprehensive Cancer Center (L.E.A.), Duke University Medical Center, Durham, NC.