1 University of Pennsylvania Center for Mental Health Policy and Services Research, 3535 Market Street, 3 Floor, Philadelphia, PA 19104, USA.
2 Speech and Hearing Sciences, University of Washington, University of Washington Autism Center, Box 357920, Seattle, WA 98195, USA, , jjlocke@uw.edu.
3 University of Pennsylvania Center for Mental Health Policy and Services Research, 3535 Market Street, 3 Floor, Philadelphia, PA 19104, USA, , pmelanie@upenn.edu.
4 University of Pennsylvania School of Social Policy and Practice, 3701 Locust Walk, Caster Building Room C16, Philadelphia, PA 19104, , marcuss@upenn.edu.
5 University of Pennsylvania Center for Mental Health Policy and Services Research, 3535 Market Street, 3 Floor, Philadelphia, PA 19104, USA, , thadley@upenn.edu.
6 University of Pennsylvania Center for Mental Health Policy and Services Research, The Children's Hospital of Philadelphia Center for Autism Research, 3535 Market Street, 3 floor, Philadelphia, PA 19104, , mandelld@upenn.edu.