,   . <br/><br/>
International Journal of Epidemiology   Textual Documents 

 - Vol - 19 /   1990. 
 - 590 ;    
<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Index Terms: </label>Community Medicine  Medical Science 
<br/><br/><label>Dewey Class. No.: </label>614.4