Klopper, A I <br/><br/>
Observations on the variability of plasma estriol.  [electronic resource] 

 -  Obstetrics and gynecology  Apr 1977 
 - 459-61 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0029-7844 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Estriol--blood<br/>Female<br/>Humans<br/>Pregnancy<br/>Pregnancy Trimester, Third