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Forest plot (A) of the hazard ratio for the association of nuclear-expressed APE1 levels and OS; Begg's funnel plots of publication bias (B) for meta-analysis of OS of high and low nuclear-expressed APE1; forest plot (C) of the hazard ratio for the association of cytoplasm-expressed APE1 levels and OS; Begg's funnel plots of publication bias (D) for meta-analysis of OS of high and low cytoplasm-expressed APE1.
