title: [A study on the efficiency of gastric cancer screening, with special reference to the appropriate frequency of screening].
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D009367:Neoplasm Staging; D013274:Stomach Neoplasms / Q000453:epidemiology* / Q000401:mortality / Q000473:pathology; D013997:Time Factors