1. Nisonger Center, Ohio State University, Columbus.
2. Riley Hospital for Children, Indiana University, Indianapolis.
3. Yale Child Study Center, Yale University, New Haven, Conn.
4. Kennedy Krieger Institute, Johns Hopkins University, Baltimore.
5. Department of Psychiatry, Neuropsychiatric Institute, University of California, Los Angeles.
6. National Institute of Mental Health, Bethesda, MD.