1. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
2. Center on Early Life Origins of Disease, Department of Population, Family and Reproductive Health, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland
3. Department of Mental Health, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland
4. Department of Pediatrics, Boston Medical Center, Boston, Massachusetts
5. Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
6. Department of Pediatrics, Johns Hopkins School of Medicine, Baltimore MD
7. Wendy Klag Center for Autism and Developmental Disabilities, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland