Scott, Fergus The loss rates for invasive prenatal testing in a specialised obstetric ultrasound practice. [electronic resource] - The Australian & New Zealand journal of obstetrics & gynaecology Feb 2002 - 55-8 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0004-8666 Standard No.: 10.1111/j.0004-8666.2002.00061.x doi Subjects--Topical Terms: Abortion, Spontaneous--epidemiologyAdultAmniocentesis--adverse effectsChi-Square DistributionChorionic Villi Sampling--adverse effectsCohort StudiesFemaleGestational AgeHumansMiddle AgedNew South Wales--epidemiologyObstetrics--standardsPregnancyPregnancy OutcomePregnancy Trimester, FirstPrenatal Care--standardsPrenatal Diagnosis--adverse effectsPrevalenceProbabilityRetrospective StudiesRisk AssessmentSampling StudiesUltrasonography, Prenatal