1. Department of Neurology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
2. Program in Trauma, R Adam Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA
3. Division of Neurocritical Care and Emergency Neurology, University of Maryland Medical Center, Baltimore, MD 21201, USA
4. Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA
5. Department of Cardiovascular Medicine, University of Maryland Medical Center, Baltimore, MD 21201, USA