Rothman Kenneth J;Greenland Sander;Lash Timothy L <br/><br/>
Modern epidemiology 

 - 3 
 - New Delhi  wolters kluer L W W  2009 
 - 758 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Community Medicine (614.44)<br/>Epidemiology (614.4)