1. Departments of aPediatrics
2. bEmergency Medicine
3. cYale University, New Haven, Connecticut
4. dDivision of Public Health Sciences, Department of Surgery, School of Medicine, Washington University, St Louis, Missouri
5. eInternal Medicine, Yale School of Medicine, New Haven, Connecticut
6. fDivision of Emergency Medicine, Department of Pediatrics, Ann and Robert H. Lurie Children’s Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, Illinois