Gastric cancer.
D000328:Adult; D000367:Age Factors; D000368:Aged; D005260:Female; D005743:Gastrectomy; D006801:Humans; D007813:Laparotomy; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D013274:Stomach Neoplasms / Q000453:epidemiology / Q000601:surgery*; D013997:Time Factors