1. The Division of Emergency Medicine; The Children's Hospital of Philadelphia; Philadelphia PA
2. The Performance Division; Children's Health Care Associates; Shawnee KS
3. The Division of Emergency Medicine and the James M. Anderson Center for Health Systems Excellence; Cincinnati Children's Hospital Medical Center; Cincinnati OH
4. The Emory University and Children's Healthcare of Atlanta; Atlanta GA
5. The Department of Pediatrics; University of South Dakota Sanford School of Medicine and Sanford Children's Hospital; Sioux Falls SD
6. The Children's Mercy Hospital; Kansas City MO
7. The University of Washington School of Medicine and Seattle Children's Hospital; Seattle WA
8. The Division of Emergency Medicine; Ann and Robert H. Lurie Children's Hospital of Chicago and Center for Healthcare Studies; Northwestern University Feinberg School of Medicine; Chicago IL