title: [Maternal age and the incidence of Down's syndrome].
mesh_terms: D000293:Adolescent; D000328:Adult; D004314:Down Syndrome / Q000453:epidemiology*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008423:Maternal Age; D008875:Middle Aged; D011247:Pregnancy
vernacular_title: Maĭchina vuzrast i chestota na M. Down.