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Table 1.

Inclusion and exclusion criteria.

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Fig 1.

PRISMA flow diagram.

From: Page MJ, McKenzie JE, Bossuyt PM, Boutron I, Hoffmann TC, Mulrow CD, Shamseer L, Tetzlaff JM, Akl EA, Brennan SE, Chou R. The PRISMA 2020 statement: An updated guideline for reporting systematic reviews. International Journal of Surgery. 2021 Apr 1; 88:105906. visit: http://www.prisma-statement.org/.

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Table 2.

Level of evidence and critical appraisal scores.

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Table 3.

NHMRC body of evidence framework.

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Table 4.

Study characteristics.

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Table 5.

Outcomes measures and main findings.

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