1. Department of Emergency Medicine, College of Medicine, University of Florida, 1329 SW 16th Street, P.O. Box 100186, Gainesville, FL 32610-0186, USA
2. Division of Clinical Research, Department of Emergency Medicine & Neurological Surgery and Toral Family Foundation, Center for Brain Injury Research and Education, College of Medicine, University of Florida, 1329 SW 16th Street, P.O. Box 100186, Gainesville, FL 32610-0186, USA