1. Child Study Center, Yale University, New Haven, Connecticut.
2. Department of Psychiatry, Yale University, New Haven, Connecticut.
3. Department of Psychiatry, University of Pennsylvania, Philadelphia, Pennsylvania.
4. Department of Child and Adolescent Psychiatry and Behavioral Services, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
5. Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany.
6. Sewanee: The University of the South, Sewanee, Tennessee.