[This corrects the article DOI: 10.2196/14863.].
©Luciana Midaglia, Patricia Mulero, Xavier Montalban, Jennifer Graves, Stephen L Hauser, Laura Julian, Michael Baker, Jan Schadrack, Christian Gossens, Alf Scotland, Florian Lipsmeier, Johan van Beek, Corrado Bernasconi, Shibeshih Belachew, Michael Lindemann. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 08.10.2019.