[This corrects the article DOI: 10.2196/12835.].
©Francesc X Marin-Gomez, Rocio Garcia-Moreno Marchán, Anabel Mayos-Fernandez, Gemma Flores-Mateo, Esther Granado-Font, Maria Luisa Barrera Uriarte, Jordi Duch, Cristina Rey-Reñones. Originally published in JMIR Serious Games (http://games.jmir.org), 11.07.2019.