Parity and Down's syndrome.
Castilla
E E
EE
Paz
J E
JE
D000328:Adult; D004314:Down Syndrome / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008423:Maternal Age; D008875:Middle Aged; D010298:Parity; D011247:Pregnancy; D012307:Risk Factors