First-trimester prenatal diagnostic method becoming available in U.S.
D002824:Chorionic Villi / Q000648:ultrastructure*; D000013:Congenital Abnormalities / Q000175:diagnosis*; D005260:Female; D006801:Humans; D010920:Placenta / Q000648:ultrastructure*; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011296:Prenatal Diagnosis / Q000379:methods*; D014481:United States