1. From the Department of Neurology and Neurotherapeutics, University of Texas Southwestern, Dallas (M.J.A.); Department of Neurology, University of Pittsburgh, PA (L.R.W.); Department of Radiology and Medical Imaging (M.E.L.J.), Department of Neurology (D.G.), University of Virginia, Charlottesville; Department of Radiology, UC Davis Medical Center (R.E.L.); Department of Emergency Medicine, West Virginia University, Morgantown (T.J.C.); Centers for Disease Control and Prevention, Atlanta, GA (M.G.G....