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. 2021 Sep 23;2021:9967574. doi: 10.1155/2021/9967574

Figure 1.

Figure 1

PRISMA flow diagram of the study selection. Adapted from: Page, M. J., McKenzie, J. E., Bossuyt, P. M., Boutron, I., Hoffmann, T. C., Mulrow, C. D. (2021). The PRISMA 2020 statement: An updated guideline for reporting systematic reviews. BMJ, 71, 372.