1. From the Departments of Neurosurgery (D.H., D.K.K.), Radiology (V.A.M.), and Internal Medicine and Pharmacology (D.H.), Carver College of Medicine, University of Iowa, Iowa City, IA; Department of Neurosurgery, Thomas Jefferson University and Jefferson Hospital for Neuroscience, Philadelphia, PA (N.C., P.J., A.S.D.); Departments of Neurological Surgery (W.L.Y.) and Anesthesia and Perioperative Care (W.L.Y., T.H.), University of California San Francisco, San Francisco, CA; Department of Neurosurgery ...