Major abdominal operations on patients aged 80 and over: an audit.
D000005:Abdomen / Q000601:surgery*; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008297:Male; D008485:Medical Audit; D011183:Postoperative Complications / Q000209:etiology* / Q000401:mortality; D012307:Risk Factors