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Forest plot and funnel plot for associations of RARβ2 promoter hypermethylation with risk, TNM-stage, and lymph node metastasis of breast cancer. (A) Forest plot for risk; (B) forest plot for TNM-stage; (C) forest plot for lymph node metastasis; (D) funnel plot for risk. CI = confidence intervals, Log OR = log odds ratio, OR = odds ratio, s.e. of logOR = standard error of log odds ratio.
