Casals, E <br/><br/>
First-trimester biochemical screening for Down syndrome with the use of PAPP-A, AFP, and beta-hCG.  [electronic resource] 

 -  Prenatal diagnosis  May 1996 
 - 405-10 p.  digital 
<br/><br/> Publication Type: Comparative Study; Journal Article 
<br/><br/><label>ISSN: </label>0197-3851 
<br/><br/><label>Standard No.: </label>10.1002/(SICI)1097-0223(199605)16:5<405::AID-PD868>3.0.CO;2-Y  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Biomarkers<br/>Chorionic Gonadotropin, beta Subunit, Human--blood<br/>Down Syndrome--diagnosis<br/>Female<br/>Fetal Diseases--diagnosis<br/>Fluorescent Antibody Technique<br/>Humans<br/>Pregnancy<br/>Pregnancy Trimester, First<br/>Pregnancy-Associated Plasma Protein-A--analysis<br/>Prenatal Diagnosis--standards<br/>ROC Curve<br/>Radioimmunoassay<br/>Reagent Kits, Diagnostic<br/>alpha-Fetoproteins--analysis