1 University of Maryland School of Medicine, Baltimore, MD.
2 The R Adam Cowley Shock Trauma Center and the Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, MD; Research Associate Program in Emergency Medicine and Critical Care, Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, MD.
3 Research Associate Program in Emergency Medicine and Critical Care, Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, MD.
4 The R Adam Cowley Shock Trauma Center and the Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, MD.
5 Department of Emergency Medicine, George Washington University School of Medicine and Health Sciences, Washington, DC.