Chorionic villus sampling: first trimester prenatal diagnosis.
D001706:Biopsy / Q000009:adverse effects; D002824:Chorionic Villi / Q000473:pathology*; D002869:Chromosome Aberrations / Q000473:pathology*; D025063:Chromosome Disorders; D005260:Female; D030342:Genetic Diseases, Inborn / Q000473:pathology*; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011296:Prenatal Diagnosis / Q000379:methods