A-6G and A-20C Polymorphisms in the Angiotensinogen Promoter and Hypertension Risk in Chinese: A Meta-Analysis
Figure 5
Begg's funnel plot analysis to detect publication bias.
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.