1. Department of Emergency Medicine, University of California, San Francisco
2. Division of Emergency Medicine, Ann and Robert H. Lurie Children’s Hospital of Chicago, Chicago, Illinois
3. Department of Community Health and Preventive Medicine, National Center for Primary Care, Morehouse School of Medicine, Atlanta, Georgia
4. Division of Emergency Medicine, Boston Children’s Hospital, Boston, Massachusetts
5. Institute of Public and Preventive Health, Augusta University, Augusta, Georgia
6. Division of Emergency Medicine, Children’s National Hospital, Washington, District of Columbia