1. From the Department of Emergency Medicine and Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Ontario, Canada (I.G.S., C.V.); Clinical Trials Center, Department of Biostatistics (S.P.B., G.N.) and Department of Medicine (G.N.), University of Washington, Seattle, WA; University of Washington-Harborview Center for Prehospital Emergency Care, Seattle, WA (G.N.); Division of Emergency Medicine, Department of Family and Community Medicine (S.C.), and Division of Emergency Medicine,...