1. Northwestern University Feinberg School of Medicine, Chicago, Illinois
2. Division of Emergency Medicine, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, Illinois
3. Mary Ann & J. Milburn Smith Child Health Outcomes, Research, and Evaluation Center, Stanley Manne Children’s Research Institute, Chicago, Illinois
4. Pediatric Emergency Medicine, Boston University Chobanian and Avedisian School of Medicine, Boston Medical Center, Boston, Massachusetts
5. Departments of Emergency Medicine and Pediatrics, Alpert Medical School of Brown University, Providence, Rhode Island
6. Patrick M. Magoon Institute for Healthy Communities, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, Illinois