title: Chorionic villus sampling versus amniocentesis.
authors.forename: R H
authors.initials: RH
authors.lastname: Ward
authors.forename: M
authors.initials: M
authors.lastname: Lucas
mesh_terms: D000649:Amniocentesis; D015193:Chorionic Villi Sampling; D005260:Female; D006801:Humans; D010342:Patient Acceptance of Health Care; D011247:Pregnancy; D011897:Random Allocation