Prenatal diagnosis of chromosome anomalies.
D000653:Amniotic Fluid; D002869:Chromosome Aberrations; D004314:Down Syndrome / Q000175:diagnosis; D004470:Economics, Medical; D005260:Female; D005817:Genetic Counseling; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis; D011677:Punctures