[1] MedStar Georgetown Univ, MedStar Washington Hosp Ctr, Dept Emergency Med, Washington Hosp Ctr Emergency Med Residency, Washington, DC 20010 USA
[2] MedStar Washington Hosp Ctr, Dept Emergency Med, Washington, DC 20010 USA
[3] MedStar Georgetown Univ Hosp, Dept Emergency Med, Washington, DC 20007 USA