Maternal serum alphafetoprotein in pregnancy and the prevention of birth defect.
D000028:Abortion, Induced; D000013:Congenital Abnormalities / Q000175:diagnosis* / Q000517:prevention & control; D005260:Female; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis; D012306:Risk; D013997:Time Factors; D014815:Vitamins / Q000627:therapeutic use; D000509:alpha-Fetoproteins / Q000378:metabolism*
D014815:Vitamins; D000509:alpha-Fetoproteins