Screening for Down's syndrome.
I
I
White
D E
DE
Magnay
D004314:Down Syndrome / Q000517:prevention & control*; D005260:Female; D006801:Humans; D008403:Mass Screening / Q000379:methods*; D011247:Pregnancy; D011296:Prenatal Diagnosis / Q000379:methods*; D000509:alpha-Fetoproteins / Q000032:analysis*
D000509:alpha-Fetoproteins