Quality Assessment:
5 of the 7 studies included in our meta-analysis had a low risk of bias.
All domains reported a low risk for the RCTs as the procedure, analysis,
and outcomes were adequate in these studies. The study by Zou et al had
a moderate risk of bias due to some concerns in the randomization
process while the study by Kho et al., had a high risk of bias due to
serious issues in the randomization process. Detailed tables of Quality
and Risk of Bias Assessment results are presented in the supplementary
document.