1. From the Department of Emergency Medicine, Carolinas Medical Center, Carolinas Health System, Charlotte, NC (A.D., A.W.A.); CHS Northeast (L.H.), CHS Pineville (G.L.), and Center for Outcomes Research and Evaluation (M.T.), Carolinas Healthcare System, Charlotte, NC; Department of Neurology, Novant Health Presbyterian Medical Center, Charlotte, NC (C.W.K., D.S., S.V.C.); and Mecklenburg Emergency Medical Services Agency, Charlotte, NC (T.J.P.).