Article
Second trimester prenatal screening for Down's syndrome using alpha‐fetoprotein and free beta hCG: a seven year review
1 Dec 1999
Abstract excerpt
OBJECTIVE: To determine the value and impact over a seven year period of a second trimester screening programme for trisomy 21 and trisomy 18, using the two maternal serum markers alpha-fetoprotein and free beta human chorionic gonadotrophin. DESIGN: Retrospective review. SETTING: A biochemical screening laboratory serving three health districts with three antenatal clinics in both teaching and nonteaching...
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