. 2020 Dec 9;22(12):e21687. doi: 10.2196/21687
©Yanxia Wei, Pinpin Zheng, Hui Deng, Xihui Wang, Xiaomei Li, Hua Fu. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 09.12.2020.
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Figure 1.
Screening flowchart.