[1] Harvard Univ, Sch Med, Dept Psychiat, Childrens Hosp Boston, Boston, MA 02115 USA
[2] SW Texas State Univ, Clin Autism Res Evaluat & Support, San Marcos, TX 78666 USA
[3] Univ Texas Austin, Meadows Ctr Prevent Educ Risk, Austin, TX 78712 USA
[4] Harvard Univ, Sch Med, Dept Neurol, Childrens Hosp Boston, Boston, MA 02115 USA
[5] Univ Bari, Bari, Italy