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Risk of Bias in Systematic Reviews (ROBIS tool) of the study.
| Phase 2 | Phase 3 | |||
|---|---|---|---|---|
| Study eligibility criteria | Identification and selection of studies | Data collection and study appraisal | Synthesis and findings | Risk of bias in review |
| Low risk | Low risk | Low risk | High risk | Low risk |
*Possible risk of bias levels: low, high, unclear.
