1. Department of Psychiatry and Behavioral Sciences; University of Washington; Seattle Washington
2. Department of Biostatistics; Columbia University; New York New York
3. Division of Developmental Medicine; Boston Children's Hospital; Boston Massachusetts
4. Harvard Medical School; Boston Massachusetts
5. Department of Pediatrics; Baylor College of Medicine; Houston Texas
6. Thompson Autism Center; University of Missouri; Columbia Missouri
7. Simons Foundation; New York New York
8. Department of Pediatrics and Medicine; Columbia University; New York New York