title: Abdominal surgery in elderly patients: statistical analysis of clinical factors prognostic of mortality in 1,000 cases.
mesh_terms: D000005:Abdomen / Q000601:surgery*; D000368:Aged; D000369:Aged, 80 and over; D006801:Humans; D011183:Postoperative Complications / Q000401:mortality*; D011379:Prognosis