title: Response to Ritvo and Ritvo letter.
authors.forename: Marisela
authors.initials: M
authors.lastname: Huerta
authors.forename: Somer L
authors.initials: SL
authors.lastname: Bishop
authors.forename: Amie
authors.initials: A
authors.lastname: Duncan
authors.forename: Vanessa
authors.initials: V
authors.lastname: Hus
authors.forename: Catherine
authors.initials: C
authors.lastname: Lord
mesh_terms: D002659:Child Development Disorders, Pervasive / Q000175:diagnosis*; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005260:Female; D006801:Humans; D008297:Male