[1] Univ Maryland, R Adams Cowley Shock Trauma Ctr, Div Acute Care Surg, 22 South Greene St, Baltimore, MD 21201 USA
[2] Univ Maryland, Sch Med, Dept Surg, 22 South Greene St, Baltimore, MD 21201 USA
[3] Ctr Shock Trauma & Anesthesiol Res, 110 South Paca St,Room 03-002, Baltimore, MD 21201 USA