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The funnel plots were largely symmetrical, suggesting there were no publication biases in the meta-analysis.
Notes: The funnel plot from nine studies comparing RUNX3 hypermethylation between BC and normal breast tissue (A). The funnel plot from three studies comparing RUNX3 hypermethylation between ER-positive BC and ER-negative BC (B).
Abbreviations: BC, breast cancer; ER, estrogen receptor; OR, odds ratio; SE, standard error.
