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. 2015 Feb 3;17(2):e33. doi: 10.2196/jmir.3938

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©Glenn Goh, Ngiap Chuan Tan, Rahul Malhotra, Uma Padmanabhan, Sylvaine Barbier, John Carson Allen Jr, Truls Østbye. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 03.02.2015.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0/), 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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Questions evaluating "interactive Diet and Activity Tracker" (iDAT) app usefulness, current diet and exercise, motivation to improve diet, and motivation to exercise.