title: [Epidemiological study of gastric cancer in Hokkaido].
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007564:Japan; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D013274:Stomach Neoplasms / Q000175:diagnosis / Q000453:epidemiology* / Q000401:mortality