title: Gallstones and gastric cancer: a matched case-control study.
mesh_terms: D000230:Adenocarcinoma / Q000150:complications* / Q000601:surgery; D000368:Aged; D002763:Cholecystectomy; D002769:Cholelithiasis / Q000150:complications* / Q000601:surgery; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012306:Risk; D013274:Stomach Neoplasms / Q000150:complications* / Q000601:surgery