Chorionscopy and chorionic villi sampling.
D000022:Abortion, Spontaneous / Q000209:etiology; D000328:Adult; D001424:Bacterial Infections / Q000150:complications; D002824:Chorionic Villi / Q000473:pathology*; D019723:Endoscopes; D004724:Endoscopy / Q000379:methods; D005260:Female; D006801:Humans; D008875:Middle Aged; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011296:Prenatal Diagnosis / Q000379:methods*