title: Role of maternal age in assessment of risk of abortion after prenatal diagnosis during first trimester.
mesh_terms: D000022:Abortion, Spontaneous / Q000209:etiology*; D000328:Adult; D002824:Chorionic Villi / Q000473:pathology; D005260:Female; D006801:Humans; D008423:Maternal Age; D011247:Pregnancy; D011256:Pregnancy Outcome; D011261:Pregnancy Trimester, First; D018566:Pregnancy, High-Risk; D011296:Prenatal Diagnosis / Q000379:methods*; D012307:Risk Factors