Designing clinical research / 
Stephen B. Hulley ... [et al.]. 
 - 3rd ed. 
 - Philadelphia, PA :  Lippincott Williams & Wilkins,  2007. 
 - xv, 367 p. ill. ;  26 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780781782104 0781782104 
<br/><br/><label>LCCN: </label>2006028271 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Clinical trials.<br/>Medicine--Research--Methodology.<br/>Epidemiology--Research--Methodology.<br/>Epidemiologic Methods.<br/>Research Design.
<br/><br/><label>LC Class. No.: </label>R 853.C55  / D4 2007