METHODS: A total of236 patients with gastric cancer and708 cancer-free controls were genotyped for the2 polymorphisms bypolymerase chain reaction-restrictive fragment length polymorphism( PCR-RFLP) method.

• 方法:以聚合酶链反应-限制性片段长度多态分析方法,检测236例胃癌患者和708例无肿瘤正常对照的基因型。