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Forest plots of XPD Lys751Gln polymorphism and HCC risk in subgroup analysis by ethnicity using a random-effects model (dominant model Gln/Gln+Lys/Gln vs Lys/Lys). Gln = glutamine, HCC = hepatocellular carcinoma, Lys = lysine, OR = odds ratio, XPD = xeroderma pigmentosum group D.
