. 2021 Nov 17;23(11):e31007. doi: 10.2196/31007
©Qi Zhang, Yu Fu, Yanhui Lu, Yating Zhang, Qifang Huang, Yajie Yang, Ke Zhang, Mingzi Li. Originally published in the Journal of Medical Internet Research (https://www.jmir.org), 17.11.2021.
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Figure 2.
Risk-of-bias summary.