title: Drs. Ozonoff and Miller reply.
authors.affiliation: University of California, Davis, Sacramento. Electronic address: Sally.ozonoff@ucdmc.ucdavis.edu.
authors.forename: Sally
authors.initials: S
authors.lastname: Ozonoff
authors.affiliation: University of California, Davis, Sacramento.
authors.forename: Meghan
authors.initials: M
authors.lastname: Miller
mesh_terms: D002659:Child Development Disorders, Pervasive / Q000175:diagnosis* / Q000235:genetics*; D005260:Female; D006801:Humans; D008297:Male; D010641:Phenotype; D035781:Siblings