1. Arizona Emergency Medicine Research Center, The University of Arizona College of Medicine, Phoenix2Department of Emergency Medicine, The University of Arizona College of Medicine, Tucson
2. Arizona Emergency Medicine Research Center, The University of Arizona College of Medicine, Phoenix3The Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson
3. Arizona Emergency Medicine Research Center, The University of Arizona College of Medicine, Phoenix2Department of Emergency Medicine, The University of Arizona College of Medicine, Tucson4Arizona Department of Health Services, Bureau of Emergency Medical Services, Phoenix
4. Arizona Emergency Medicine Research Center, The University of Arizona College of Medicine, Phoenix4Arizona Department of Health Services, Bureau of Emergency Medical Services, Phoenix
5. The Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson
6. Arizona Emergency Medicine Research Center, The University of Arizona College of Medicine, Phoenix
7. Arizona Department of Health Services, Bureau of Emergency Medical Services, Phoenix
8. Barrow Neurological Institute, Phoenix Children’s Hospital, Phoenix, Arizona6Department of Child Health, The University of Arizona College of Medicine, Phoenix