1. From the Departments Anesthesiology (T.J.G., V.C.O.F., S.D.S.O., G.H., R.D., B.B.-S., R.D.M.), Medicine (M.G.B.), and Pharmacology (R.D.M.), University of Illinois at Chicago, Chicago, Illinois; and Institute of Anesthesiology (V.C.O.F., B.B.-S.) and the Institute of Physiology and Zurich Center for Integrative Human Physiology (T.J.G., V.C.O.F., B.B.-S.), University of Zurich, Zurich, Switzerlan