Thomas, R E <br/><br/>
Bone density and milk. Low recruitment rate may introduce selection bias.  [electronic resource] 

 -  BMJ (Clinical research ed.)  Jun 1994 
 - 1566 p.  digital 
<br/><br/> Publication Type: Comment; Letter; Research Support, Non-U.S. Gov't 
<br/><br/><label>ISSN: </label>0959-8138 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Bone Density<br/>Humans<br/>Milk<br/>Selection Bias