[1] Univ Maryland, Sch Med, Program Trauma Surg Crit Care, R Adams Cowley Shock Trauma Ctr, Baltimore, MD 21201 USA
[2] Mt Sinai Hosp, Dept Crit Care Med, New York, NY 10029 USA
[3] Univ Maryland, Sch Med, Baltimore, MD 21201 USA
[4] Univ Maryland, Sch Med, Dept Emergency Med, Res Associate Program Emergency Med & Crit Care, Baltimore, MD 21201 USA
[5] Univ Maryland, Sch Med, R Adams Cowley Shock Trauma Ctr, Baltimore, MD 21201 USA
[6] Univ Maryland, Sch Med, Dept Emergency Med, Baltimore, MD 21201 USA