[1] Univ Arizona, Dept Pediat, Tucson, AZ 85724 USA
[2] Univ Arizona, Steele Res Ctr, Tucson, AZ 85724 USA
[3] Univ Rochester, Dept Neurol, Rochester, NY USA
[4] Univ Iowa, Dept Pediat, Iowa City, IA 52242 USA
[5] Seattle Childrens Hosp, Seattle, WA USA
[6] Oak Ridge Inst Sci & Educ, Atlanta, GA USA
[7] Ctr Dis Control & Prevent, Div Human Dev & Disabil, Natl Ctr Birth Defects & Dev Disabil, Atlanta, GA USA
[8] Univ Colorado, Sch Med, Dept Phys Med & Rehabil, Denver, CO USA
[9] Childrens Hosp, Denver, CO 80218 USA
[10] Univ Arizona, Dept Psychol, Tucson, AZ 85721 USA