Second-trimester ultrasound markers for the detection of Down's syndrome: are they worth the effort.
Goldberg
J D
JD
Reproductive Genetics Unit, University of California, San Francisco, USA.
D004314:Down Syndrome / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D012680:Sensitivity and Specificity; D016216:Ultrasonography, Prenatal