title: Sample size needed to assess risk of abortion after chorionic villus sampling.
authors.forename: W
authors.initials: W
authors.lastname: Holzgreve
authors.forename: A
authors.initials: A
authors.lastname: Reisch
authors.forename: P
authors.initials: P
authors.lastname: Miny
authors.forename: F K
authors.initials: FK
authors.lastname: Beller
mesh_terms: D000022:Abortion, Spontaneous / Q000209:etiology*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis / Q000009:adverse effects*; D012306:Risk