1. Department of Emergency Medicine, University of Maryland School of Medicine, 10 South Paca Street, Room 4S-127, Baltimore MD 21201, United States of America (USA).
2. Department of Emergency Medicine, Johns Hopkins University School of Medicine, Baltimore, USA.
3. R Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, USA.
4. Global Health Initiatives, University of Maryland, Baltimore, USA.