Johnson, T R <br/><br/>
Plasma estriol in the evaluation of third-trimester gestational age.  [electronic resource] 

 -  Obstetrics and gynecology  May 1980 
 - 621-4 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/>Fetal Monitoring--methods<br/>Fetus--physiology<br/>Gestational Age<br/>Humans<br/>Lung--embryology<br/>Pregnancy<br/>Pregnancy Trimester, Third