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. 2019 Sep 12;21(9):e14984. doi: 10.2196/14984

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©Bhone Myint Kyaw, Lorainne Tudor Car, Louise Sandra van Galen, Michiel A van Agtmael, Céire E Costelloe, Onyema Ajuebor, James Campbell, Josip Car. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 12.09.2019.

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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graphic file with name jmir_v21i9e14984_fig4.jpg — Risk of bias summary. Green: high risk of bias; red: low risk of bias; yellow: unclear risk of bias.