Martinez, O <br/><br/>
Effect of oral contraceptives on blood folate levels in pregnancy.  [electronic resource] 

 -  American journal of obstetrics and gynecology  Jun 1977 
 - 255-61 p.  digital 
<br/><br/> Publication Type: Clinical Trial; Journal Article 
<br/><br/><label>ISSN: </label>0002-9378 
<br/><br/><label>Standard No.: </label>10.1016/0002-9378(77)90618-4  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Clinical Trials as Topic<br/>Contraceptives, Oral--pharmacology<br/>Diet<br/>Erythrocytes--analysis<br/>Female<br/>Folic Acid--analysis<br/>Humans<br/>Pregnancy<br/>Seasons