Table 3. Cochrane risk-of-bias for assessment of the selected clinical trials.

Table 3 presents the analysis of Cochrane risk-of-bias evaluation for the designated clinical trials.

Clinical Trial	Selection bias	Reporting bias	Performance bias	Detection bias	Attrition bias
Gao et al. [14]	Low risk	Intermediate risk	Low risk	Low risk	Low risk
Shitara et al. [15]	Low risk	Low risk	Low risk	Intermediate risk	Low risk
Larkin et al. [16]	Intermediate risk	Low risk	Low risk	Low risk	Low risk
Nanda et al. [17]	Low risk	Low risk	Intermediate risk	Low risk	Intermediate risk