title: Nonfamiliality of the sex ratio in autism.
authors.forename: M B
authors.initials: MB
authors.lastname: Jones
authors.forename: P
authors.initials: P
authors.lastname: Szatmari
authors.forename: J
authors.initials: J
authors.lastname: Piven
mesh_terms: D001321:Autistic Disorder / Q000453:epidemiology / Q000235:genetics*; D001722:Birth Order; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D009679:Nuclear Family; D012727:Sex Characteristics