Figure 3From: Association of COMT Val158Met polymorphism and breast cancer risk: an updated meta-analysisCumulative meta-analysis of the association between COMT Val158Met polymorphism and breast cancer susceptibility risk of the overall populations using a random effects model (dominant model LL+HL versus HH) . Each study was used as an information step. The vertical dotted line is the summary odds ratio. Bars, 95% confidence interval (CI).Back to article page