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Table 1.

The development of review questions based on PICOS framework.

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Fig 1.

PRISMA flow diagram for study selection.

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Table 2.

The main characteristic of participants in the included studies.

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Table 2 Expand

Fig 2.

(a). Risk of Bias (ROB) analysis for each study. (b). Summary of risk of bias across the studies.

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Table 3.

Study designs and interventions employed in the included studies.

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Table 3 Expand

Table 4.

Result of individual studies.

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