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. 2021 Nov 18;15:2563–2575. doi: 10.2147/PPA.S269355

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© 2021 Tan et al.

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Flowchart of study selection.

Notes: PRISMA figure adapted from Page MJ, McKenzie JE, Bossuyt PM, et al. The PRISMA 2020 statement: an updated guideline for reporting systematic reviews. BMJ. 2021;372:n71. Available from: http://creativecommons.org/licenses/by/4.0/.¹⁸