Serum screening for Down's syndrome. Informed consent is vital...
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D004314:Down Syndrome / Q000175:diagnosis*; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis*; D006801:Humans; D007258:Informed Consent; D008403:Mass Screening; D011247:Pregnancy; D011296:Prenatal Diagnosis; D006113:United Kingdom