Basic principles of clinical research and methodology / 
edited by S.K. Gupta. 
 - New Delhi :  Jaypee,  2007. 
 - xii, 504 p. 
<br/><br/><label>ISBN: </label>8184480865 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Clinical research--Clinical methods--Research methodology<br/>Methods