Hackshaw, A K <br/><br/>
Inaccurate estimation of risk in second trimester serum screening for Down syndrome among women who have already had first trimester screening.  [electronic resource] 

 -  Prenatal diagnosis  Sep 2001 
 - 741-6 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0197-3851 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Age Factors<br/>Biomarkers--blood<br/>Down Syndrome--blood<br/>Female<br/>Humans<br/>Mass Screening--methods<br/>Maternal Age<br/>Neck--diagnostic imaging<br/>Pregnancy<br/>Pregnancy Trimester, First<br/>Pregnancy Trimester, Second<br/>Pregnancy, High-Risk<br/>Reproducibility of Results<br/>Risk Assessment<br/>Risk Factors<br/>Ultrasonography, Prenatal