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Association between the XRCC1 Polymorphisms and Thyroid Cancer Risk: A Meta-Analysis from Case-Control Studies
Figure 2
Begg's funnel plot of the meta-analysis of thyroid cancer risk and XRCC1 Arg399Gln polymorphism.
(Homozygote model and dominant model).
doi: https://doi.org/10.1371/journal.pone.0087764.g002