title: Chorionic villus sampling and amniocentesis.
authors.affiliation: Jefferson Medical College of Thomas Jefferson University Hospital, Philadelphia, Pennsylvania.
authors.forename: N S
authors.initials: NS
authors.lastname: Silverman
authors.forename: R J
authors.initials: RJ
authors.lastname: Wapner
mesh_terms: D000022:Abortion, Spontaneous / Q000453:epidemiology / Q000209:etiology; D000649:Amniocentesis / Q000009:adverse effects / Q000379:methods* / Q000592:standards; D015193:Chorionic Villi Sampling / Q000009:adverse effects / Q000379:methods* / Q000592:standards; D005260:Female; D006801:Humans; D011247:Pregnancy; D016216:Ultrasonography, Prenatal / Q000379:methods* / Q000592:standards