. 2021 Feb 2;23(2):e21465. doi: 10.2196/21465
©Zixin Wang, Joseph T F Lau, Tsun Kwan Mary Ip, Yebo Yu, Francois Fong, Yuan Fang, Phoenix K H Mo. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 02.02.2021.
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Figure 1.
CONSORT (Consolidated Standards of Reporting Trials) flow diagram of the study.