[1] Childrens Hosp Philadelphia, PolicyLab, Philadelphia, PA USA
[2] Childrens Hosp Philadelphia, Div Dev & Behav Pediat, 3550 Market St,3rd Floor, Philadelphia, PA 19147 USA
[3] Childrens Hosp Philadelphia, Ctr Autism Res, Philadelphia, PA USA
[4] Univ Penn, Perelman Sch Med, Philadelphia, PA USA
[5] Baylor Coll Med, Dept Pediat, Meyer Ctr Dev Pediat & Autism, Houston, TX USA
[6] Texas Childrens Hosp, Houston, TX 77030 USA
[7] Childrens Hosp Philadelphia, Dept Pediat, Philadelphia, PA USA
[8] Boston Med Ctr, Div Dev Behav Pediat, Boston, MA USA
[9] Boston Univ, Sch Med, Boston, MA USA
[10] Childrens Hosp Philadelphia, Language Serv Dept, Philadelphia, PA USA
[11] Akron Childrens Hosp, Div Dev & Behav Pediat, Akron, OH USA