Maternal serum screening for neural tube defects and Down's syndrome.
D001315:Australia; D004314:Down Syndrome / Q000517:prevention & control*; D005260:Female; D006801:Humans; D008403:Mass Screening / Q000458:organization & administration*; D009436:Neural Tube Defects / Q000517:prevention & control*; D011247:Pregnancy; D011296:Prenatal Diagnosis