1. Centers for Disease Control and Prevention, Atlanta, Georgia
2. Rady Children' Hospital, Atlanta, Georgia
3. University of California San Diego School of Medicine, San Diego
4. University of Washington School of Medicine, Seattle, Washington
5. Summa Health System, Akron, Ohio
6. Alpert Medical School, Brown University, Rhode Island
7. Quality Partners of Rhode Island, Providence, Rhode Island
8. University of Virginia School of Medicine, Charlottesville, Virginia
9. University of Toronto, Ontario, Canada
10. PATH, Seattle, Washington
11. University of Utah School of Medicine, Salt Lake City, Utah
12. Lenox Hill Hospital, New York
13. New York University School of Medicine, New York
14. University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania