1. Office of the Medical Director, Metropolitan Area EMS Authority, Fort Worth, Texas
2. Department of Emergency Medicine, Baylor Scott & White, Fort Worth, Texas
3. Department of Emergency Medicine, University of Washington, Seattle, Washington
4. Seattle Fire Department, Seattle, Washington
5. ESO, Austin, Texas
6. Department of Emergency Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
7. Department of Emergency Medicine, The Ohio State University, Columbus, Ohio