[1] Massachusetts Gen Hosp, Dept Med, Boston, MA 02114 USA
[2] Brigham & Womens Hosp, Brigham & Womens Hosp, Dept Emergency Med, 75 Francis St, Boston, MA 02115 USA
[3] Brigham & Womens Hosp, Dept Emergency Med, Harvard Affiliated Emergency Med Residency Progra, 75 Francis St, Boston, MA 02115 USA