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. 2023 Jan 6;20(2):1046. doi: 10.3390/ijerph20021046

Figure 2.

Figure 2

Risk-of-bias graphs for the randomized controlled trial (RCT) studies. (a) Risk of bias as a percentage and (b) risk-of-bias summary [16,19,26,27,30,36,38,39,54,55,56,57,58,59].