Fig. 3

Risk of bias assessment. Note: D1: Randomization process D2: Deviations from the intended interventions D3: Missing outcome data D4: Measurement of the outcome D5: Selection of the reported result.

Risk of bias assessment. Note: D1: Randomization process D2: Deviations from the intended interventions D3: Missing outcome data D4: Measurement of the outcome D5: Selection of the reported result.