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. 2020 May 28;22(5):e19421. doi: 10.2196/19421

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©Cuihua Shen, Anfan Chen, Chen Luo, Jingwen Zhang, Bo Feng, Wang Liao. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 28.05.2020.

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 http://www.jmir.org/, as well as this copyright and license information must be included.

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Demographic composition of our Weibo user pool compared to that in the 2018 Annual Sina Weibo user report. Age is reported in years.