Lammer, E <br/><br/>
Are vitamin A supplements needed during pregnancy?  [electronic resource] 

 -  The Western journal of medicine  Jan 1990 
 - 68 p.  digital 
<br/><br/> Publication Type: Editorial 
<br/><br/><label>ISSN: </label>0093-0415 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Female<br/>Humans<br/>Pregnancy--metabolism<br/>Vitamin A--administration & dosage