1. US Centers for Disease Control and Prevention, Atlanta, Georgia
2. School of Medicine, Emory University, Atlanta, Georgia
3. Children’s Healthcare of Atlanta, Atlanta, Georgia
4. Vanderbilt University Medical Center, Nashville, Tennessee
5. Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio
6. Boston Medical Center, Boston, Massachusetts
7. Duke University, Durham, North Carolina
8. US Food and Drug Administration, Silver Spring, Maryland