Bias	Author's judgment	Support for judgment
Risk of bias arising from the randomization process	Low risk	No information on allocation concealment, no differences between groups in baseline characteristics.
Risk of bias due to deviations from the intended interventions (effect of assignment to intervention)	Some concerns	No information on blinding, no information on deviations that arose.
Risk of bias due to deviations from the intended interventions (effect of adhering to intervention)	Some concerns	No information on blinding of participants or deviations that arose.
Missing outcome data	Low risk	Almost all the participants were included in the analysis, with no difference in dropouts between groups.
Risk of bias in measurement of the outcome	Low risk	Method of measuring outcome was appropriate and similar between groups. Outcome assessors might have been aware of the intervention received but their knowledge could not have influenced by their knowledge.
Risk of bias in selection of the reported result	Low risk	All outcomes reported appropriety.