Prenatal diagnosis of Down's syndrome.
D000328:Adult; D000367:Age Factors; D000649:Amniocentesis / Q000592:standards; D004314:Down Syndrome / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008318:Malpractice; D011247:Pregnancy; D011296:Prenatal Diagnosis; D012306:Risk