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. 2022 Apr 26;14:521–542. doi: 10.2147/CLEP.S341480

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© 2022 Thor Petersen et al.

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Flow diagram illustrating the study selection process. Articles could be excluded due to more than one reason. Thus, the number of articles that meet the specific reasons for exclusion is not mutually exclusive. Adapted from Liberati A, Altman DG, Tetzlaff J et al. The PRISMA statement for reporting systematic reviews and meta-analyses of studies that evaluate healthcare interventions: explanation and elaboration. BMJ. 2009;339(jul21 1):b2700-b2700.⁶⁷