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Fig 1.

PRISMA flow diagram.

Searched Jan 2000 to May 7, 2020; last search date: May 7, 2020.

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Table 1.

Characteristics of included studies.

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Table 1 Expand

Table 2.

Contents of interventions at the individual level.

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Table 3.

Contents of interventions at the organizational level.

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Table 4.

Recommended research topics based on the findings of this review.

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Table 4 Expand