1. Ohio State University, Columbus, Ohio.
2. Indiana University, Indianapolis, Indiana.
3. National Institute of Mental Health, Bethesda, Maryland.
4. Yale University, New Haven, Connecticut.
5. Columbia University, New York, New York.
6. University of California, Los Angeles, California.
7. Kennedy Krieger Institute, Baltimore, Maryland.
8. Children's Hospital of Columbus, Ohio.
9. Arizona Child Study Center, Phoenix, Arizona.