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. 2019 Apr 15;21(4):e11756. doi: 10.2196/11756

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©Annie T Chen, Aarti Swaminathan, William R Kearns, Nicole M Alberts, Emily F Law, Tonya M Palermo. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 15.04.2019.

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 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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Communication history analysis interface: (a) cluster controls, (b) cluster engagement characteristics (theme proportions and parent/teen participation), (c) message sequences, and (d) cluster demographics.