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Association of Interleukin-18 Gene Promoter −607 C>A and −137G>C Polymorphisms with Cancer Risk: A Meta-Analysis of 26 Studies

Figure 5

Funnel plot analysis to detect publication bias for −137 G>C. The circles represent the weight of individual study.

Figure 5

doi: https://doi.org/10.1371/journal.pone.0073671.g005