Campbell, Michael J. <br/><br/>
Medical statistics:  a textbook for the health sciences/ 
Michael J Campbell, David Machin, Stephen J Walters 
 - 4th ed 
 - Chichester, West Sussex:  John Wiley & Sons,  2007 
 - xii, 331p.:  ill.;  24cm 
<br/><br/>Includes bibliograp[hical references and index 
<br/><br/><label>ISBN: </label>9780470025192