Olson, J A <br/><br/>
Vitamin A assessment by the isotope-dilution technique: good news from Guatemala.  [electronic resource] 

 -  The American journal of clinical nutrition  Feb 1999 
 - 177-8 p.  digital 
<br/><br/> Publication Type: Comment; Editorial 
<br/><br/><label>ISSN: </label>0002-9165 
<br/><br/><label>Standard No.: </label>10.1093/ajcn/69.2.177  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aged<br/>Animals<br/>Female<br/>Guatemala<br/>Humans<br/>Male<br/>Middle Aged<br/>Radioisotope Dilution Technique<br/>Rats<br/>Vitamin A--analysis<br/>Vitamin A Deficiency--diagnosis