Comparative endoscopic studies on gastric cancer in Japan and Korea.
D000328:Adult; D000368:Aged; D005260:Female; D005773:Gastroscopy; D006801:Humans; D007564:Japan; D007723:Korea; D008297:Male; D008875:Middle Aged; D013274:Stomach Neoplasms / Q000175:diagnosis / Q000453:epidemiology*