title: The male excess in Down's syndrome.
authors.forename: W H
authors.initials: WH
authors.lastname: James
mesh_terms: D000818:Animals; D006224:Cricetinae; D003670:Deer; D004314:Down Syndrome / Q000235:genetics*; D005260:Female; D006801:Humans; D008251:Macaca; D008297:Male; D008647:Mesocricetus; D051381:Rats; D012744:Sex Ratio