Risk of additional intra-abdominal procedures at the time of colectomy.
D000005:Abdomen / Q000601:surgery*; D000368:Aged; D002763:Cholecystectomy / Q000401:mortality; D003082:Colectomy / Q000401:mortality; D003108:Colonic Diseases / Q000601:surgery; D006801:Humans; D008297:Male; D011183:Postoperative Complications / Q000401:mortality; D012189:Retrospective Studies