Breimer, L <br/><br/>
First trimester biochemical screening for trisomy 21: the role of free beta-hCG and pregnancy associated plasma protein.  [electronic resource] 

 -  Annals of clinical biochemistry  Mar 1995 
 - 233 p.  digital 
<br/><br/> Publication Type: Comment; Letter 
<br/><br/><label>ISSN: </label>0004-5632 
<br/><br/><label>Standard No.: </label>10.1177/000456329503200223  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chorionic Gonadotropin--blood<br/>Chorionic Gonadotropin, beta Subunit, Human<br/>Down Syndrome--diagnosis<br/>Female<br/>Humans<br/>Peptide Fragments--blood<br/>Pregnancy<br/>Pregnancy Trimester, First<br/>Pregnancy-Associated Plasma Protein-A--analysis<br/>Prenatal Diagnosis