. 2019 Feb 12;21(2):e12937. doi: 10.2196/12937
©Gerard Dunleavy, Charoula Konstantia Nikolaou, Sokratis Nifakos, Rifat Atun, Gloria Chun Yi Law, Lorainne Tudor Car. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 12.02.2019.
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.
Figure 6.
Risk of bias summary: review authors’ judgments about each risk of bias item across all included studies.