1. Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
2. Wendy Klag Center for Autism and Developmental Disabilities, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
3. College of Public Health, University of South Florida, Tampa, FL, USA
4. Department of Biostatistics and Informatics, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
5. Department of Pediatrics, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
6. Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
7. Department of Pediatrics, University of North Carolina School of Medicine, Chapel Hill, NC, USA
8. Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
9. A.J. Drexel Autism Institute, Drexel University, Philadelphia, PA, USA
10. Rollins School of Public Health, Emory University, Atlanta, GA, US
11. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA