title: High risk of Down's syndrome at advanced maternal age.
mesh_terms: D000328:Adult; D004314:Down Syndrome / Q000453:epidemiology*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008131:London; D008423:Maternal Age; D008875:Middle Aged; D011247:Pregnancy; D012306:Risk