1. Departments of Pediatrics and Emergency Medicine and the Adult and Child Consortium for Outcomes Research and Delivery Science University of Colorado School of Medicine and Children's Hospital Colorado (MRS) AuroraCO
2. Department of Pediatrics University of Michigan Ann Arbor MI
3. Department of Emergency Medicine University of Michigan Ann Arbor MI
4. Child Health Evaluation and Research University of Michigan Ann Arbor MI
5. Institute for Healthcare Policy and Innovation University of Michigan Ann Arbor MI
6. Division of Emergency Medicine University of Washington Harborview Medical Center Seattle WA