[Epidemiological studies on stomach cancer found in mass screening--with special reference to early stomach cancer].
D000328:Adult; D000367:Age Factors; D000368:Aged; D000818:Animals; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D009790:Occupations; D012737:Sex Factors; D013274:Stomach Neoplasms / Q000453:epidemiology*; D011795:Surveys and Questionnaires