1. Department of Emergency Medicine, School of Medicine, University of Minnesota, Minneapolis, Minnesota
2. Department of Emergency Medicine, Oklahoma School of Community Medicine, Tulsa, Oklahoma
3. Division of Emergency Medical Services, State of Tennessee Department of Health, Nashville, Tennessee
4. Fire Department, Station 1, Green, Ohio
5. Emergency Medical Services, Green, Ohio
6. Department of Emergency Medicine, Mayo Clinic Alix School of Health Sciences, Jacksonville, Florida