1. Department of Psychiatry, Columbia University Medical Center and New York State Psychiatric Institute, New York, New York;
2. Center for Autism and Developmental Disorders, Maine Behavioral Healthcare, South Portland, Maine;
3. Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, California;
4. Departments of Behavioral Psychology and
5. Psychiatry, Kennedy Krieger Institute, and Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland;
6. Psychiatry, Children’s Health Council, Palo Alto, California;
7. MassGeneral Hospital for Children, Boston, Massachusetts;
8. Nationwide Children’s Hospital, Columbus, Ohio; and
9. New York Presbyterian Hospital Center for Autism and the Developing Brain, White Plains, New York