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. 2023 Aug 29;25:e49255. doi: 10.2196/49255

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©Chang Lu, Bo Hu, Qiang Li, Chao Bi, Xing-Da Ju. Originally published in the Journal of Medical Internet Research (https://www.jmir.org), 29.08.2023.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in the Journal of Medical Internet Research, is properly cited. The complete bibliographic information, a link to the original publication on https://www.jmir.org/, as well as this copyright and license information must be included.

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PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) flowchart of the study selection process; n refers to the number of articles, while k refers to the number of studies independently sampled in these articles.