Hallahan, T W <br/><br/>
Appropriate terminology for free beta-hCG.  [electronic resource] 

 -  Prenatal diagnosis  Sep 2004 
 - 745; author reply 745-6 p.  digital 
<br/><br/> Publication Type: Comment; Letter 
<br/><br/><label>ISSN: </label>0197-3851 
<br/><br/><label>Standard No.: </label>10.1002/pd.905  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chorionic Gonadotropin, beta Subunit, Human<br/>Female<br/>Humans<br/>Pregnancy<br/>Prenatal Diagnosis<br/>Terminology as Topic<br/>Trisomy--diagnosis