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. 2021 Mar 27;33(7-8):618–632. doi: 10.1177/08982643211004174

Figure 1.

Figure 1.

PRISMA chart. Source: Moher D., Liberati A., Tetzlaff J., Altman D. G., and The PRISMA Group (2009). Preferred reporting items for systematic reviews and meta-analyses: The PRISMA statement. PLoS Med, 6(7), article: e1000097. doi:10.1371/journal.pmed1000097.