1. From the Department of Emergency Medicine (L.G.B., R.C.B., J.E.); Department of Neurology (C.R.F., L.R.C., S.K.), Beth Israel Deaconess Medical Center and Harvard Medical School; Division of General Internal Medicine (E.J.O.), Brigham and Women's Hospital; and The Harvard T.H. Chan School of Public Health in Boston (L.G.B., J.E.), MA.