Homogeneous Subgroups of Young Children with Autism Improve Phenotypic Characterization in the Study to Explore Early Development. - Wiggins, Lisa; Tian, Lin; Levy, Susan; Rice, Catherine; Lee, Li-Ching; Schieve, Laura; Pandey, Juhi; Daniels, Julie; Blaskey, Lisa; Hepburn, Susan; Landa, Rebecca; Edmondson-Pretzel, Rebecca; et al. (Journal of Autism & Developmental Disorders, 2017)