Table 5.

The risk of bias assessment for studies included to a systematic review, conducted using the revised Cochrane risk-of-bias tool for randomized trials.

Ref.	Domain 1	Domain 2	Domain 3	Domain 4	Domain 5	Overall Bias
[29]
[30]
[31]
[32]
[33]
[34]
[35]
[36]

—Low risk of bias; —Some concerns associated with risk of bias —High risk of bias; Domains: 1—arising from the randomization process; 2—deviations from the intended interventions; 3—missing outcome data; 4—measurement of the outcome; 5—selection of the reported result.