1. From the Department of Anesthesiology, NorthShore University HealthSystem, University of Chicago Pritzker School of Medicine, Evanston, Illinois (G.S.M., S.B.G., T.D.S., M.A.D., D.D., S.B., J.B., C.E.M., G.J.T., K.J.T., J.W.S.); and the Department of Anesthesiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois (M.J.A.).