Chorionic villus sampling.
D001707:Biopsy, Needle / Q000009:adverse effects / Q000379:methods; D002478:Cells, Cultured; D002824:Chorionic Villi / Q000473:pathology*; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis*; D006801:Humans; D011237:Predictive Value of Tests; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011296:Prenatal Diagnosis / Q000379:methods; D014463:Ultrasonography