[Mass screening of the stomach by photofluorography--its history and basic concept].
D000328:Adult; D000368:Aged; D049673:History, 20th Century; D006801:Humans; D007564:Japan; D008403:Mass Screening / Q000266:history; D008875:Middle Aged; D011859:Radiography / Q000266:history; D013272:Stomach Diseases / Q000000981:diagnostic imaging* / Q000266:history