Table 5. Risk of bias of the included controlled clinical trial in the systematic review.

Study	Bias due to confounding	Bias in the selection of participants for the study	Bias in the classification of interventions	Bias due to deviations from intended interventions	Bias due to missing data	Bias in the measurement of outcomes	Bias in the selection of the reported result	Overall
Heravi et al. (2016) [15]	Low. No confounding is expected	Low. All participants who would have been eligible for the target trial were included in the study, and for each participant, the start of follow-up and start of intervention coincided	No information	Low. There were no deviations from the intended interventions (in terms of implementation or adherence) that were likely to impact the outcome	Low. No dropouts were reported	Serious. The outcome measure was probably influenced by knowledge of the intervention received by study participants	Low. The protocol was not registered. But the pre-defined outcomes mentioned in the methods section seemed to have been reported	Serious