[Surgical operation of gastric cancer in Hokkaido in 1981].
D000328:Adult; D000368:Aged; D005260:Female; D005743:Gastrectomy; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D013274:Stomach Neoplasms / Q000453:epidemiology / Q000601:surgery*