1. National Registry of Emergency Medical Technicians, Columbus, Ohio
2. The Ohio State University College of Public Health, Division of Epidemiology, Columbus, Ohio
3. Los Angeles County EMS Agency, Santa Fe Springs, California
4. ESO, Austin, Texas
5. Cumming School of Medicine, University of Calgary, Calgary, Alberta
6. Children’s Wisconsin, Milwaukee, Wisconsin
7. Metropolitan Area EMS Authority, Fort Worth, Texas
8. Maine Medical Center, Portland, Maine
9. The Ohio State University Wexner Medical Center, Department of Emergency Medicine, Columbus, Ohio