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. 2019 Jun 27;21(6):e14303. doi: 10.2196/14303

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©Hyunyi Cho, Wenbo Li, Lijiang Shen, Julie Cannon. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 27.06.2019.

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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Effects of self-expression motivation on attitude toward e-cigarette use through frequency of Instagram use and exposure to e-cigarette messages on Instagram. Numbers are unstandardized regression coefficients. *P<.05, **P<.01, ***P<.001. e-cig/e-cigarette: electronic cigarette.