1. From the Departments of Neurology (B.M.K., L.S., D.W., J.C., J.B.), Environmental Health (J.K., R.S.), and Emergency Medicine (A.P., E.J.), University of Cincinnati College of Medicine; Institute for Health Policy and Health Services Research, University of Cincinnati (C.J.M.); Molecular Diagnostics Laboratory (R.F.), Cincinnati, Ohio; and Department of Neurology (J.G.), University of Pittsburgh, Pittsburgh, Pa