title: [Trisomy 21: maternal age and other risk factors].
authors.affiliation: Service de cytogénétique, Hôpital Necker-enfants malades, Paris.
authors.forename: M
authors.initials: M
authors.lastname: Vekemans
mesh_terms: D004314:Down Syndrome / Q000453:epidemiology / Q000235:genetics*; D005260:Female; D006801:Humans; D008423:Maternal Age; D011247:Pregnancy; D012307:Risk Factors