1. aDivision of Emergency Medicine, Department of Pediatrics, Children’s Hospital of Michigan, Detroit, Michigan
2. bCentral Michigan University School of Medicine, Mount Pleasant, Michigan
3. cDepartment of Emergency Medicine, Wayne State University School of Medicine, Detroit Medical Center, Sinai-Grace Hospital, Detroit, Michigan
4. dDivision of Pediatric Critical Care Medicine, Department of Pediatrics, Duke University Children’s Hospital, Duke University School of Medicine, Durham, North Carolina