1. From the Department of Neurology (R.G., N.A.V., K.U., M.D.H., L.R.W., T.G.J.), University of Pittsburgh Medical Center, Pittsburgh, Pa; the Department of Neurology (R.G.), Michigan State University, East Lansing; Neurosurgery of Kalamazoo, LLC (F.A.-A., T.B.), Kalamazoo, Mich; and the Department of Neurosurgery (A.J.T., M.B.H., T.G.J.), University of Pittsburgh Medical Center, Pittsburgh, Pa.