title: Early amniocentesis versus chorionic villus sampling for fetal karyotyping.
authors.forename: A
authors.initials: A
authors.lastname: Boulos
authors.forename: M
authors.initials: M
authors.lastname: Tsirigotis
authors.forename: N
authors.initials: N
authors.lastname: Yazdani
authors.forename: I
authors.initials: I
authors.lastname: Craft
mesh_terms: D000022:Abortion, Spontaneous / Q000209:etiology*; D000649:Amniocentesis / Q000009:adverse effects* / Q000379:methods; D015193:Chorionic Villi Sampling; D005260:Female; D005865:Gestational Age; D006801:Humans; D007621:Karyotyping; D011247:Pregnancy