1. aDivision of Emergency Medicine, Seattle Children’s Hospital, Seattle, Washington
2. bDivision of Pediatric Emergency Medicine, Massachusetts General Hospital, Boston, Massachusetts
3. cDepartments of Pediatrics and Emergency Medicine, Harvard Medical School, Boston, Massachusetts
4. dBoston Children’s Hospital, Boston, Massachusetts
5. eDivision of Emergency Medicine, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio
6. fDepartment of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
7. gDepartment of Emergency Medicine and Pediatrics, University of California, San Francisco, California
8. hDivision of Emergency Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois
9. iDepartment of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, Illinois
10. jDivision of Emergency and Transport, Children's Hospital Los Angeles, Los Angeles, California
11. kDepartment of Pharmacy, Boston Children's Hospital, Boston, Massachusetts