Transarterial chemoembolization plus stent placement for hepatocellular carcinoma with main portal vein tumor thrombosis: A meta-analysis

Figure 2 Risk of bias summary and bias graph. A: Review authors’ judgements about each risk of bias item for each included study; B: Review authors' judgements about each risk of bias item presented as percentages across all included studies. −: High risk; +: Low risk; ?: Unclear risk.