1. Wendy Klag Center for Autism and Developmental Disabilities, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
2. Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
3. Department of Social and Behavioral Sciences, Harvard T. H. Chan School of Public Health, Boston, Massachusetts, United States
4. Division of Research, Kaiser Permanente Northern California, Oakland, California, USA
5. Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
6. Lifecourse Epidemiology of Adiposity and Diabetes Center, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
7. Department of Preventive Medicine and Department of Pharmacology, Addiction Science, and Toxicology, The University of Tennessee Health Science Center, Memphis, Tennessee, USA
8. Department of Gynecology and Obstetrics, Emory University School of Medicine, Atlanta, Georgia
9. RTI International, Research Triangle Park, Durham, North Carolina, USA
10. Department of Environmental Health Sciences, Columbia Mailman School of Public Health, New York, New York, USA
11. Department of Medicine and Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore,United States
12. Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, Massachusetts, USA
13. Department of Epidemiology, Geisel School of Medicine, Dartmouth College, Hanover, New Hampshire, USA
14. Departments of Psychiatry and Pediatrics, Alpert Medical School of Brown University, Providence, Rhode Island, USA
15. AJ Drexel Autism Institute, Drexel University, Philadelphia, Pennsylvania, USA
16. Department of Pediatrics, Oregon Health and Science University, Portland, Oregon, USA
17. Division of Epidemiology and Community Health, University of Minnesota, Minneapolis, Minnesota, USA
18. Department of Pediatrics, School of Medicine, University of Washington, Seattle, Washington, USA
19. Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan, United States
20. Division of Neuroscience, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, Oregon, United States
21. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA