Figure 4.

Funnel plot for fetal genotype analysis. Funnel plot showing OR versus standard error (SE). Egger’s test p value is also shown. Each square or diamond represents a study. Squares and diamonds represent different subgroup populations. There is no evidence of publication bias.

Wu et al. BMC Genetics 2013 14:30   doi:10.1186/1471-2156-14-30
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