Greenland, Sander <br/><br/>
Identifiability, exchangeability and confounding revisited.  [electronic resource] 

 -  Epidemiologic perspectives & innovations : EP+I  Sep 2009 
 - 4 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>1742-5573 
<br/><br/><label>Standard No.: </label>10.1186/1742-5573-6-4  doi