1. Department of Pediatrics Section of Emergency Medicine Children's Hospital Colorado University of Colorado School of Medicine Aurora Colorado USA
2. Department of Pediatrics Division of Pediatric Emergency Medicine School of Medicine University of Utah Salt Lake City Utah USA
3. Department of Pediatrics School of Medicine University of Utah Salt Lake City Utah USA
4. Los Angeles County EMS Agency Los Angeles California USA
5. Departments of Emergency Medicine and Pediatrics David Geffen School of Medicine at University of California Los Angeles Los Angeles California USA
6. Departments of Emergency Medicine and Pediatrics Harbor‐University of California Los Angeles Medical Center Torrance California USA
7. National EMS for Children Innovation and Improvement Center Departments of Pediatrics and Surgery Dell Medical School University of Texas at Austin Austin Texas USA
8. Department of Emergency Medicine and Pediatrics Rady Children's Hospital of San Diego University of California San Diego California USA