1. Departments of Pediatrics and Surgery Dell Medical School University of Texas at Austin Austin Texas USA
2. Departments of Emergency Medicine and Pediatrics David Geffen School of Medicine Harbor‐UCLA Medical Center Lundquist Institute for Biomedical Innovation at Harbor‐UCLA Medical Center Torrance California USA
3. Center for Policy and Research in Emergency Medicine Department of Emergency Medicine Oregon Health & Science University Portland Oregon USA
4. Department of Health Policy and Center for Health Policy Stanford Medical School and Freeman Spogli Institute Stanford University Stanford California USA
5. Department of Emergency Medicine University of California San Francisco San Francisco California USA
6. Center for Health Systems Effectiveness Department of Emergency Medicine Oregon Health & Science University Portland Oregon USA
7. Department of Surgery Indiana University Indianapolis Indiana USA
8. Department of Pediatrics University of Utah School of Medicine Salt Lake City Utah USA
9. Department of Emergency Medicine and Pediatrics University of California, Davis School of Medicine Sacramento California USA
10. Department of Pediatrics Emergency Medicine, & Radiology University of Pittsburgh School of Medicine Pittsburgh Pennsylvania USA
11. Emergency Medical Services and Trauma Systems Program Oregon Health Authority Portland Oregon USA