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Odds ratios and 95% CIs of hepatocellular carcinoma according to tumor necrosis factor-α-238 polymorphism in 10 studies using a random-effect model. AA + GA, AA, and GA genotypes of tumor necrosis factor-α-238 polymorphism and GG, GG genotype of tumor necrosis factor-α-238 polymorphism. M-H = xxxxxxxx.
