Multiparity and Down's syndrome.
Haddow
J E
JE
Palomaki
G E
GE
D000328:Adult; D004314:Down Syndrome / Q000209:etiology*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008423:Maternal Age; D010298:Parity; D018566:Pregnancy, High-Risk; D012307:Risk Factors