Re: Trisomy 21: 91% detection rate using second-trimester ultrasound markers.
Hutchon
D J
DJ
D004314:Down Syndrome / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D016013:Likelihood Functions; D011237:Predictive Value of Tests; D011247:Pregnancy; D016216:Ultrasonography, Prenatal