Sheldon, T A <br/><br/>
Appraisal of a new scheme for prenatal screening for Down's syndrome.  [electronic resource] 

 -  BMJ (Clinical research ed.)  May 1991 
 - 1133-6 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0959-8138 
<br/><br/><label>Standard No.: </label>10.1136/bmj.302.6785.1133  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Chorionic Gonadotropin--blood<br/>Cost-Benefit Analysis<br/>Diagnostic Tests, Routine--economics<br/>Down Syndrome--diagnosis<br/>Estriol--blood<br/>Female<br/>Fetal Diseases--diagnosis<br/>Humans<br/>Maternal Age<br/>Predictive Value of Tests<br/>Pregnancy--blood<br/>Pregnant People<br/>Prenatal Diagnosis--economics<br/>Risk Factors<br/>alpha-Fetoproteins--metabolism