Macri, J N <br/><br/>
Maternal serum Down syndrome screening: unconjugated estriol is not useful.  [electronic resource] 

 -  American journal of obstetrics and gynecology  Mar 1990 
 - 672-3 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0002-9378 
<br/><br/><label>Standard No.: </label>10.1016/0002-9378(90)90980-l  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Down Syndrome--diagnosis<br/>Estriol--blood<br/>Female<br/>Gestational Age<br/>Humans<br/>Pregnancy--blood<br/>Regression Analysis