Recent advances in obstetrics. Figures on screening for Down's syndrome are inaccurate.
Kennard
A
A
Alberman
E
E
Gill
M
M
D004314:Down Syndrome / Q000175:diagnosis*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis / Q000706:statistics & numerical data*; D012680:Sensitivity and Specificity