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Macrogeographic and micrographic comparative study of risk factors for gastric cancer in Japan, China and South America. 

 - Chile-CL :   NORprint,   1998. 
 - p. 13-20 :   il. 
 - Irregular 
 - No. 15 (1998) 
 - Estudios Atacameños ;   no. 15 .
 - Chile.   Universidad Católica del Norte.  .
<br/><br/> Session 1 : Epidemiology and Pathology. 
<br/><br/><br/>Inglés.