1. Hundahl SA, Phillips JL, Menck HR. The National Cancer Data Base Report on poor survival of U.S. gastric carcinoma patients treated with gastrectomy: Fifth Edition American Joint Committee on Cancer staging, proximal disease, and the "different disease" hypothesis. Cancer. 2000. 88:921–932.
2. Cuschieri A, Fayers P, Fielding J, Craven J, Bancewicz J, Joypaul V, et al. The Surgical Cooperative Group. Postoperative morbidity and mortality after D1 and D2 resections for gastric cancer: preliminary results of the MRC randomised controlled surgical trial. Lancet. 1996. 347:995–999.
3. DePinho RA. The age of cancer. Nature. 2000. 408:248–254.
4. Monson K, Litvak DA, Bold RJ. Surgery in the aged population: surgical oncology. Arch Surg. 2003. 138:1061–1067.
5. Crews DE, Zavotka S. Aging, disability, and frailty: implications for universal design. J Physiol Anthropol. 2006. 25:113–118.
6. Fujimoto S, Takahashi M, Ohkubo H, Mutou T, Kure M, Masaoka H, et al. Comparative clinicopathologic features of early gastric cancer in young and older patients. Surgery. 1994. 115:516–520.
7. Nakamura T, Yao T, Niho Y, Tsuneyoshi M. A clinicopathological study in young patients with gastric carcinoma. J Surg Oncol. 1999. 71:214–219.
8. Japanese Gastric Cancer Association. Japanese Classification of Gastric Carcinoma - 2nd English Edition -. Gastric Cancer. 1998. 1:10–24.
9. McKenna RJ Sr. Clinical aspects of cancer in the elderly. Treatment decisions, treatment choices, and follow-up. Cancer. 1994. 74:7 Suppl. 2107–2117.
10. Matsushita I, Hanai H, Kajimura M, Tamakoshi K, Nakajima T, Matsubayashi Y, et al. Should gastric cancer patients more than 80 years of age undergo surgery? Comparison with patients not treated surgically concerning prognosis and quality of life. J Clin Gastroenterol. 2002. 35:29–34.
11. Katai H, Sasako M, Sano T, Maruyama K. The outcome of surgical treatment for gastric carcinoma in the elderly. Jpn J Clin Oncol. 1998. 28:112–115.
12. Houry S, Amenabar J, Rezvani A, Huguier M. Should patients over 80 years old be operated on for colorectal or gastric cancer? Hepatogastroenterology. 1994. 41:521–525.
13. Wu CW, Lo SS, Shen KH, Hsieh MC, Lui WY, P'eng FK. Surgical mortality, survival, and quality of life after resection for gastric cancer in the elderly. World J Surg. 2000. 24:465–472.
14. Kitamura K, Yamaguchi T, Taniguchi H, Hagiwara A, Yamane T, Sawai K, et al. Clinicopathological characteristics of gastric cancer in the elderly. Br J Cancer. 1996. 73:798–802.
15. Kim DY, Joo JK, Ryu SY, Park YK, Kim YJ, Kim SK. Clinicopathologic characteristics of gastric carcinoma in elderly patients: a comparison with young patients. World J Gastroenterol. 2005. 11:22–26.
16. Hohenberger P, Gretschel S. Gastric cancer. Lancet. 2003. 362:305–315.
17. Parsonnet J, Vandersteen D, Goates J, Sibley RK, Pritikin J, Chang Y. Helicobacter pylori infection in intestinal- and diffuse-type gastric adenocarcinomas. J Natl Cancer Inst. 1991. 83:640–643.
18. Uemura N, Okamoto S, Yamamoto S, Matsumura N, Yamaguchi S, Yamakido M, et al. Helicobacter pylori infection and the development of gastric cancer. N Engl J Med. 2001. 345:784–789.
19. Orsenigo E, Tomajer V, Palo SD, Carlucci M, Vignali A, Tamburini A, et al. Impact of age on postoperative outcomes in 1118 gastric cancer patients undergoing surgical treatment. Gastric Cancer. 2007. 10:39–44.
20. Coniglio A, Tiberio GA, Busti M, Gaverini G, Baiocchi L, Piardi T, et al. Surgical treatment for gastric carcinoma in the elderly. J Surg Oncol. 2004. 88:201–205.
21. Trias M, Targarona EM, Ros E, Bordas JM, Perez Ayuso RM, Balagué C, et al. Prospective evaluation of a minimally invasive approach for treatment of bile-duct calculi in the high-risk patient. Surg Endosc. 1997. 11:632–635.
22. Bergman JJ, Rauws EA, Tijssen JG, Tytgat GN, Huibregtse K. Biliary endoprostheses in elderly patients with endoscopically irretrievable common bile duct stones: report on 117 patients. Gastrointest Endosc. 1995. 42:195–201.
23. Saidi RF, Bell JL, Dudrick PS. Surgical resection for gastric cancer in elderly patients: is there a difference in outcome? J Surg Res. 2004. 118:15–20.
24. Eguchi T, Fujii M, Takayama T. Mortality for gastric cancer in elderly patients. J Surg Oncol. 2003. 84:132–136.
25. Sasako M. Risk factors for surgical treatment in the Dutch Gastric Cancer Trial. Br J Surg. 1997. 84:1567–1571.