Elwood, J. Mark <br/><br/>
Critical appraisal of epidemiological studies and clinical trials / 
J. Mark Elwood 
 - 3rd ed. 
 - Oxford :  Oxford University Press,  2007 
 - xiii, 570 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0198529554  RM239.72 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidemiologic Methods<br/>Epidemiologic Studies<br/>Clinical trials
<br/><br/><label>National Library of Medicine Call No.: </label>WA950  / .E52ca 2007 9HUKM