. 2021 Feb 23;23(2):e20445. doi: 10.2196/20445
©Natsu Sasaki, Kotaro Imamura, Thuy Thi Thu Tran, Huong Thanh Nguyen, Kazuto Kuribayashi, Asuka Sakuraya, Thu Minh Bui, Quynh Thuy Nguyen, Nga Thi Nguyen, Giang Thi Huong Nguyen, Melvyn Weibin Zhang, Harry Minas, Yuki Sekiya, Kazuhiro Watanabe, Akizumi Tsutsumi, Akihito Shimazu, Norito Kawakami. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 23.02.2021.
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.
Figure 1.
Participant flowchart.