title: Genetic risk and early versus late prenatal testing.
authors.forename: P S
authors.initials: PS
authors.lastname: Heckerling
authors.forename: M S
authors.initials: MS
authors.lastname: Verp
mesh_terms: D000032:Abortion, Therapeutic; D000013:Congenital Abnormalities / Q000235:genetics*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis; D015995:Prevalence; D011336:Probability; D012307:Risk Factors; D013997:Time Factors