Chik, L <br/><br/>
Precise gaussian distribution functions of maternal serum alpha-fetoprotein and free beta-subunit of human chorionic gonadotropin for trisomy 21 screening: improved accuracy for patient counseling.  [electronic resource] 

 -  American journal of obstetrics and gynecology  Oct 1997 
 - 882-6 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0002-9378 
<br/><br/><label>Standard No.: </label>10.1016/s0002-9378(97)70288-6  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chorionic Gonadotropin, beta Subunit, Human--blood<br/>Counseling<br/>Down Syndrome--blood<br/>False Positive Reactions<br/>Female<br/>Humans<br/>Normal Distribution<br/>Pregnancy<br/>Prenatal Diagnosis<br/>Reference Values<br/>Risk Factors<br/>Sensitivity and Specificity<br/>alpha-Fetoproteins--analysis