Table 2.

Risk of bias summary.

Author	Lorente L[20]	Poelaert J[22]	Mahmoodpoor A[21]	Phillippart F[25]	Suhas P[24]	Deem S[26]
Domain 1: Bias arising from the randomization process	Some concerns	Some concerns	Some concerns	Low	Some concerns	Low
Domain 2: Bias due to deviations from intended interventions	Some concerns	Some concerns	Some concerns	Some concerns	Some concerns	Some concerns
Domain 3: Bias due to missing outcome data	Low	Low	Low	Low	Low	Low
Domain 4: Bias in measurement of the outcome	Some concerns	Low	Some concerns	Some concerns	Some concerns	Some concerns
Domain 5: Bias in selection of the reported result	Low	Low	Low	Low	Low	Low
Overall risk of bias judgement	Some concerns	Some concerns	Some concerns	Some concerns	Some concerns	Some concerns