S. J. Webb¹, A. Naples², A. R. Levin³, G. Hellemann⁴, C. Sugar⁵, D. Senturk⁴, M. Santhosh⁶, H. Borland⁶, T. McAllister⁷, S. Hasselmo⁷, F. Shic⁶, M. Murias⁸, J. Dziura⁹, C. Brandt¹⁰, R. A. Bernier¹¹, K. Chawarska⁷, G. Dawson¹², S. Faja¹³, S. Jeste¹⁴, C. A. Nelson¹⁵ and J. C. McPartland², (1)Center, Seattle Children’s Research Institute & University of Washington, Seattle, WA, (2)Yale Child Study Center, Yale University School of Medicine, New Haven, CT, (3)Department of Neurology, Boston Children's Hospital / Harvard Medical School, Boston, MA, (4)UCLA, Los Angeles, CA, (5)Department of Biostatistics, UCLA, Los Angeles, CA, (6)Center for Child Health, Behavior and Development, Seattle Children's Research Institute, Seattle, WA, (7)Child Study Center, Yale University School of Medicine, New Haven, CT, (8)Duke Center for Autism and Brain Development, Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC, (9)Emergency Medicine, Yale School of Medicine, New Haven, CT, (10)Yale University, New Haven, CT, (11)Psychiatry and Behavioral Sciences, University of Washington, Seattle, WA, (12)Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC, (13)Division of Developmental Medicine, Boston Children's Hospital / Harvard Medical School, Brookline, MA, (14)Pediatrics, Children's Hospital Los Angeles, Los Angeles, CA, (15)Department of Developmental Medicine, Boston Children's Hospital, Boston, MA