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. 2017 Jun 7;5(2):e13. doi: 10.2196/games.7216

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©Alexandra Hoffmann, Corinna A Christmann, Gabriele Bleser. Originally published in JMIR Serious Games (http://games.jmir.org), 07.06.2017.

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 JMIR Serious Games, is properly cited. The complete bibliographic information, a link to the original publication on http://games.jmir.org, as well as this copyright and license information must be included.

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Frequencies of the 17 gamification techniques included in the apps. Techniques were scored according to the previously introduced taxonomy of gamification techniques (see Methods subsection Evaluation).