title: Speech and language impairment and psychiatric disorder: the relevance of family demographic variables.
authors.forename: J H
authors.initials: JH
authors.lastname: Beitchman
authors.forename: M
authors.initials: M
authors.lastname: Peterson
authors.forename: M
authors.initials: M
authors.lastname: Clegg
mesh_terms: D001722:Birth Order; D002675:Child, Preschool; D004522:Educational Status; D005190:Family; D006801:Humans; D007805:Language Development Disorders / Q000150:complications*; D008393:Marriage; D001523:Mental Disorders / Q000150:complications*; D009790:Occupations; D012923:Social Class; D013064:Speech Disorders / Q000150:complications*