1. Meimarakis G, Winter H, Assmann I, et al. Helicobacter pylori as a prognostic indicator after curative resection of gastric carcinoma: a prospective study. Lancet Oncol. 2006; 7:211–222.

2. Marrelli D, Pedrazzani C, Berardi A, et al. Negative Helicobacter pylori status is associated with poor prognosis in patients with gastric cancer. Cancer. 2009; 115:2071–2080.

3. Marshall BJ, Warren JR. Unidentified curved bacilli in the stomach of patients with gastritis and peptic ulceration. Lancet. 1984; 1:1311–1315.

4. Schistosomes, liver flukes and Helicobacter pylori. IARC Working Group on the Evaluation of Carcinogenic Risks to Humans. Lyon, 7-14 June 1994. IARC Monogr Eval Carcinog Risks Hum. 1994; 61:1–241.

5. Lee WJ, Lin JT, Shun CT, et al. Comparison between resectable gastric adenocarcinomas seropositive and seronegative for Helicobacter pylori. Br J Surg. 1995; 82:802–805.

6. Xue LJ, Su QS, Yang JH, Lin Y. Autoimmune responses induced by Helicobacter pylori improve the prognosis of gastric carcinoma. Med Hypotheses. 2008; 70:273–276.

7. Park SR, Kim MJ, Ryu KW, et al. Prognostic value of preoperative clinical staging assessed by computed tomography in resectable gastric cancer patients: a viewpoint in the era of preoperative treatment. Ann Surg. 2010; 251:428–435.

8. Fukase K, Kato M, Kikuchi S, et al. Effect of eradication of Helicobacter pylori on incidence of metachronous gastric carcinoma after endoscopic resection of early gastric cancer: an open-label, randomised controlled trial. Lancet. 2008; 372:392–397.