Wallace, E M <br/><br/>
Multiple marker screening for Down syndrome in the first trimester of pregnancy.  [electronic resource] 

 -  The Australian & New Zealand journal of obstetrics & gynaecology  Aug 1997 
 - 368-70 p.  digital 
<br/><br/> Publication Type: Comment; Letter 
<br/><br/><label>ISSN: </label>0004-8666 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chorionic Gonadotropin, beta Subunit, Human--blood<br/>Down Syndrome--diagnosis<br/>Female<br/>Humans<br/>Infant, Newborn<br/>Maternal Age<br/>Pregnancy<br/>Pregnancy Trimester, First<br/>Prenatal Diagnosis--methods<br/>Sensitivity and Specificity