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. 2021 May 17;14:1251–1257. doi: 10.2147/JPR.S277574

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© 2021 Haile et al.

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Flow diagram of selection of studies using preferred reporting items for systematic reviews and meta-analyses (PRISMA).

Notes: Modified from Moher D, Liberati A, Tetzlaff J, Altman DG, The PRISMA Group (2009) Preferred Reporting Items for Systematic Reviews and Meta-Analyses: The PRISMA Statement. PLoS med. 2009;6(7):e1000097. Copyright: © 2009 Moher et al Creative Commons Attribution License.²¹