1. Department of Emergency Medicine, Brigham and Women's Hospital, Boston, Massachusetts
2. Mayerson Center for Safe & Healthy Children, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
3. CARE Team, Driscoll Children's Hospital, Corpus Cristi, Texas
4. Division of Children's Health Services Research, Riley Hospital for Children, Indianapolis, Indiana
5. Department of Pediatrics, Section of Emergency Medicine, Yale-New Haven Children's Hospital, New Haven, Connecticut
6. Department of Pediatrics, Inova Fairfax Hospital for Children, Falls Church, Virginia