1. aDivision of Pediatric Emergency Medicine, Emory University School of Medicine, Atlanta, Georgia
2. bDivision of Emergency Medicine, Children’s Healthcare of Atlanta, Atlanta, Georgia
3. cDivision of Emergency and Transport Medicine, Children’s Hospital Los Angeles, Los Angeles, California
4. Departments of dPediatrics
5. ePopulation and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, California
6. fDivision of Emergency Medicine, Department of Pediatrics, University of Washington, Seattle, Washington
7. gDivision of Pediatric Emergency medicine, Baylor College of Medicine, Texas Children’s Hospital, Houston, Texas
8. hDivision of Pediatric Emergency Medicine, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, Utah