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. 2011 Dec 28;6(12):e29489. doi: 10.1371/journal.pone.0029489

Figure 5. Begg's funnel plot analysis to detect publication bias.

Figure 5

Figure 5a shows the funnel plot for allele comparison (A vs. G) of the A-6G polymorphism. Figure 5b shows the funnel plot for allele comparison (C vs. A) of the A-20C polymorphism.