Ruta, D A <br/><br/>
Screening policy for Down syndrome.  [electronic resource] 

 -  Lancet (London, England)  Sep 1988 
 - 752 p.  digital 
<br/><br/> Publication Type: Letter 
<br/><br/><label>ISSN: </label>0140-6736 
<br/><br/><label>Standard No.: </label>10.1016/s0140-6736(88)90230-9  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chorionic Gonadotropin--blood<br/>Down Syndrome--blood<br/>England<br/>Estriol--blood<br/>Female<br/>Humans<br/>Maternal Age<br/>Pregnancy--blood<br/>Pregnancy, High-Risk<br/>alpha-Fetoproteins--analysis