Chorionic biopsy and miscarriage in first trimester.
D000022:Abortion, Spontaneous / Q000209:etiology*; D000328:Adult; D001706:Biopsy / Q000009:adverse effects*; D002823:Chorion / Q000473:pathology*; D005260:Female; D006801:Humans; D008423:Maternal Age; D011247:Pregnancy; D011261:Pregnancy Trimester, First