GI epidemiology :  diseases and clinical methodology / 
edited by Nicholas J. Talley, [and five others]. 
 - Second edition 
 - xv, 413 pages :  illustrations ;  25 cm. 
<br/><br/><label>ISBN: </label>9780470672570  RM529.56 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidemiologic Methods.