[1] Univ Calif Los Angeles, Mattel Childrens Hosp, 10833 Conte Ave,MDCC 12-311,Box 951752, Los Angeles, CA 90095 USA
[2] Univ Calif Los Angeles, Dept Hlth Policy & Management, Fielding Sch Publ Hlth, Los Angeles, CA 90095 USA
[3] Univ Calif Los Angeles, Div Internal Med & Pediat, Dept Med, Los Angeles, CA 90095 USA
[4] Univ Calif Los Angeles, Med Pediat Prevent Med, Los Angeles, CA 90095 USA
[5] Univ Calif Los Angeles, Leadership Educ Neurodev Disabil, Los Angeles, CA 90095 USA
[6] Univ Calif Los Angeles, Ctr Excellence Maternal & Child Hlth, Los Angeles, CA 90095 USA
[7] Autism Intervent Res Network Phys Hlth, New York, NY USA