Efficiency and Safety of Chinese Herbal Medicine in the Treatment of Prediabetes: A Systemic Review and Meta-Analysis of Randomized Controlled Trials

Figure 6

Funnel plot of publication bias. (a) Incidence of diabetes. (b) Incidence of normalization of prediabetes. (c) FPG. and (d) 2hPG.

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(b)

(c)

(d)