title: Early amniocentesis versus chorionic villus sampling for fetal karyotyping.
authors.forename: A T
authors.initials: AT
authors.lastname: Bombard
authors.forename: S M
authors.initials: SM
authors.lastname: Carter
authors.forename: H M
authors.initials: HM
authors.lastname: Nitowsky
mesh_terms: D000022:Abortion, Spontaneous / Q000209:etiology*; D000649:Amniocentesis / Q000009:adverse effects*; D015193:Chorionic Villi Sampling; D005260:Female; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy