title: Chorionic villus sampling versus early amniocentesis.
authors.forename: D
authors.initials: D
authors.lastname: Gurwitz
mesh_terms: D000022:Abortion, Spontaneous / Q000453:epidemiology; D000649:Amniocentesis / Q000009:adverse effects*; D015193:Chorionic Villi Sampling / Q000009:adverse effects*; D005260:Female; D005313:Fetal Death / Q000453:epidemiology; D006801:Humans; D011247:Pregnancy; D012307:Risk Factors