[1] Univ Alberta, Dept Pediat, Edmonton, AB, Canada
[2] Boston Univ, Sch Med, Dept Anat & Neurobiol, Boston, MA 02118 USA
[3] Univ Connecticut, Dept Psychol, Storrs, CT USA
[4] Univ Calif San Diego, Dept Neurosci, La Jolla, CA 92093 USA
[5] Harvard Univ, Sch Med, Boston, MA USA
[6] Massachusetts Gen Hosp Children, Boston, MA USA
[7] Integrated Ctr Child Dev, Newton, MA USA
[8] Drexel Univ, AJ Drexel Autism Inst, Philadelphia, PA 19104 USA
[9] Florida State Univ, Coll Med, Dept Clin Sci, Tallahassee, FL 32306 USA
[10] Univ Massachusetts, Mem Childrens Med Ctr, Div Dev & Behav Pediat, Worcester, MA 01605 USA
[11] Univ Calif Los Angeles, Grad Sch Educ & Informat Studies, Los Angeles, CA USA
[12] Univ Washington, Dept Psychol, Seattle, WA 98195 USA
[13] Univ Washington, Dept Speech & Hearing Sci, Seattle, WA 98195 USA
[14] Hebrew Univ Jerusalem Mt Scopus, Dept Psychol, Jerusalem, Israel
[15] Univ Calif Davis, MIND Inst, Dept Pediat, Sacramento, CA 95817 USA
[16] Yale Child Study Ctr, New Haven, CT USA
[17] Cleveland Clin, Genom Med Inst, Cleveland, OH 44106 USA
[18] Univ Massachusetts, Dept Psychol, Boston, MA 02125 USA
[19] Ctr Autism & Related Disorders, Tarzana, CA USA
[20] Thomas Jefferson Univ, Dept Occupat Therapy, Philadelphia, PA 19107 USA
[21] USC Mrs TH Chan Div Occupat Sci & Occupat Therapy, Los Angeles, CA USA
[22] Behav Dev & Educ Serv, New Bedford, MA USA