1. New York University Child Study Center, New York, New York.
2. National Institute of Mental Health,
3. Johns Hopkins University, Baltimore, Maryland.
4. McMaster University, Hamilton, Ontario.
5. New York State Psychiatric Institute/Columbia University, New York, New York.
6. University of California Irvine, Irvine, California.
7. No current affiliation, formerly at New York State Psychiatric Institute/Columbia University.
8. University of Arizona, Tucson, Arizona.
9. Duke University Medical Center; Durham, North Carolina.
10. University of California Los Angeles, Los Angeles, California.