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. 2021 Nov 24;23(11):e27880. doi: 10.2196/27880

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©Chaofan Wang, Weiwei Jiang, Kangning Yang, Difeng Yu, Joshua Newn, Zhanna Sarsenbayeva, Jorge Goncalves, Vassilis Kostakos. Originally published in the Journal of Medical Internet Research (https://www.jmir.org), 24.11.2021.

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

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Standard World Health Organization procedures of alcohol-based hand rub and handwash with soap and water. Source: World Health Organization. How to Hand rub?/How to Handwash? (with permission) [10].