1. Southern Illinois University School of Medicine, Springfield, Illinois.
2. University of Illoinois School of Public Health, Chicago, Illinois.
3. Maimonides Medical Center, State University of New York, Brooklyn, New York.
4. National Institute of Child Health and Human Development, Bethesda, Maryland.
5. University of California School of Medicine, San Francisco, California.
6. Keck School of Medicine, University of Southern California, Los Angeles, California.
7. Montefiore Medical Center, Bronx, New York.
8. Georgetown University School of Medicine, Washington, DC.
9. Maimonides Medical Center and Mount Sinai School of Medicine, New York, New York.
10. Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland.
11. Cook County Hospital, Chicago, Illinois.