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Risk of bias of prospective randomised trials.
| Adequate sequence generation? | Allocation concealment? | Blinding? | Incomplete outcomes data addressed? | Free of selective reporting? | Other bias | |
|---|---|---|---|---|---|---|
| Ziegler [10] | Yes | Yes | No | No | No | Yes-Confounding, Attrition, Detection Biases |
| Perugia [14] | Yes | Yes | No | No | No | Yes-Confounding, Attrition, Detection Biases |
