1. Department of Emergency Medicine, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
2. Department of Psychiatry and Human Behavior, The Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
3. Department of Emergency Medicine, Rhode Island Hospital, Providence, Rhode Island, USA
4. University of Utah, Salt Lake City, Utah, USA
5. Emergency Medicine, St. Louis Children’s Hospital/Washington University, St Louis, Missouri, USA
6. Children’s Hospital – Colorado, Aurora, Colorado, USA
7. Emergency Medicine and Trauma Services, Children's National Medical Center, Washington, Washington, D.C., USA
8. Emergency Medicine, Columbia University Medical Center, New York, New York, USA
9. Nationwide Children’s Hospital, Columbus, Ohio, USA
10. The Children’s Hospital of Philadelphia, Philadephia, Pennsylvania, USA
11. Los Angeles Biomedical Research Institute, Harbor-UCLA Medical Center, Torrance, California, USA
12. Medical College of Wisconsin, Milwaukee, Wisconsin, USA
13. Children’s Hospital of Pittsburgh of UPMC, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
14. Boston Children’s Hospital, Boston, Massachusetts, USA
15. Sidney Kimmel Medical College, Jefferson University/Nemours Alfred I. duPont Hospital for Children, Wilmington, Delaware, USA
16. Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
17. Lurie Children’s Hospital of Chicago, Chicago, Illinois, USA
18. University of Michigan, Ann Arbor, Michigan, USA
19. Baylor College of Medicine, Texas Children’s Hospital, Houston, Texas, USA
20. University of California of Davis, Davis, California, USA