. 2017 Nov 7;5(11):e154. doi: 10.2196/mhealth.7091
©Hee Lee, Rahel Ghebre, Chap Le, Yoo Jeong Jang, Monica Sharratt, Douglas Yee. Originally published in JMIR Mhealth and Uhealth (http://mhealth.jmir.org), 07.11.2017.
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Figure 1.
Interaction between time and group.