1Christensen K, Doblhammer G, Rau R, et al. Ageing populations : the challenges ahead [ J ]. Lancet,2009,374 ( 9696 ) : 1196-1208. DOI : 10. 1016/S0140-6736 (09) 61460-4.
2Pelavski AD, Lacasta A, Rochera MI, et al. Observational study of nonogenarians undergoing emergency, non-trauma surgery [ J ]. Br J Anaesth ,2011,106 (2) : 189-193. DOI : 10. 109.3/bja/aeq335.
3Jin F, Chung F. Minimizing perioperative adverse events in the elderly [ J ]. Br J Anaesth ,2001,87 (4) :608-624.
4Soreide K, Thorsen K, Soreide JA. Strategies to improve the out- come of emergency surgery for perforated peptic ulcer [ J ]. Br J Surg,2014,101 ( 1 ) : e51-64. DOI : 10.1002/bjs. 9368.
5Hui TT, Major KM, Avital I, et al. Outcome of elderly patients with appendicitis : effect of computed tomography and laparoseopy [ J ]. Arch Surg, 2002,137 ( 9 ) :995-998.
6Scollay JM, Mullen R, McPhiUips G, et al. Mortality associated with the treatment of gallstone disease: a 10-year contemporary national experience [ J ]. World J Surg, 2011,35 ( 3 ) : 643-647. DOI : 10. 1007/s00268-010-0908-3.
7Erlinger S. Gallstones in obesity and weight loss [ J ]. Eur J Gas- troenterol Hepato1,2000,12 ( 12 ) : 1347-1352.
8Kuy S, Sosa JA, Roman SA, et al. Age matters : a study of clinical and economic outcomes following choleeystectomy in elderly A- mericans[ J ]. Am J Surg, 2011,201 ( 6 ) : 789-796. DOI: 10. 1016/j. amjsurg. 2010.04. 018.
9Hallinen T, Soini E J, Asseburg C, et al. Warfarin treatment among Finnish patients with atrial fibrillation:retrospective registry study based on primary healtheare data [ J ]. BMJ Open, 20t4,4 ( 2 ) : e004071. DOI : 10.1136/bmjopen-2013-004071.