J Postgrad Med Close
 

Figure 2: (a) Risk of bias graph: review authors' judgments about each risk of bias item presented as percentages across all the included studies; (b) Risk of bias summary: Review authors' judgments about each risk of bias item for each included study

Figure 2: (a) Risk of bias graph: review authors' judgments about each risk of bias item presented as percentages across all the included studies; (b) Risk of bias summary: Review authors' judgments about each risk of bias item for each included study