Is risk of indicated operation too great in the elderly?
D000368:Aged; D000777:Anesthetics; D001660:Biliary Tract Diseases / Q000601:surgery; D005260:Female; D006331:Heart Diseases / Q000601:surgery; D006801:Humans; D008297:Male; D011183:Postoperative Complications; D012140:Respiratory Tract Diseases / Q000601:surgery; D012907:Smoking; D013514:Surgical Procedures, Operative; D014652:Vascular Diseases / Q000601:surgery
D000777:Anesthetics