Figure 4.

Funnel plot analysis to detect selection bias.A. Funnel plots of studies on newborn HBsAg seropositivity. B. Funnel plots of studies on infant HBsAg seropositivity. C. Funnel plots of studies on newborn HBV DNA seropositivity. D. Funnel plots of studies on infant HBV DNA seropositivity. E. Funnel plots of studies on maternal blood HBV DNA levels before treatment. F. Funnel plots of studies on maternal blood HBV DNA levels prior to delivery. G. Funnel plots of studies on elevation of maternal serum creatine kinase.

Deng et al. Virology Journal 2012 9:185   doi:10.1186/1743-422X-9-185
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