Fletcher Robert H. , <br/><br/>
Clinicla Epidemiology  Textual Documents 

 - 5th ed. . 
 -  Wolters Kluwer /Lippinocott Williams & Wilkins  2014 
 - 255. 
<br/><br/><label>ISBN: </label>9781451144475   
<br/><br/><label>Subjects--Index Terms: </label>Epidemiology 
<br/><br/><label>Dewey Class. No.: </label>614.4  / FLE