Fletcher, R. W. <br/><br/>
Clinical epidemiology   the essentials. 
R. W Fletcher 
 - 4th. 
 - Philadephia   Lippincott Williams & Wilkins  2005 
<br/><br/><label>ISBN: </label>078177571 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Clinical Epidemiology.
<br/><br/><label>LC Class. No.: </label>RA 652.2 .C55F58