1. Division of Emergency Medicine, Boston Children’s Hospital, Boston, Massachusetts
2. Division of Pediatric Emergency Medicine, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
3. Section of Pediatric Emergency Medicine, University of Colorado School of Medicine, Aurora
4. Children's Hospital Colorado, Aurora
5. Department of Pediatrics, Baylor College of Medicine, Houston, Texas
6. Division of Emergency and Transport Medicine, Children's Hospital Los Angeles, Los Angeles, California
7. Keck School of Medicine of the University of Southern California, Los Angeles
8. Division of General Pediatrics, Boston Children’s Hospital, Boston, Massachusetts