1. Department of Neurology, University of Kentucky‚ Lexington (S.D., I.M.E.).
2. Department of Neurology (N.F., M.B., J.W., A.F., R.V.S., A.Z.), Washington University in St. Louis.
3. Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University‚ Baltimore‚ MD (O.A.).
4. Department of Radiology (A.Z.), Washington University in St. Louis.