. 2019 May 7;21(5):e13357. doi: 10.2196/13357
©Giovanni Ferreira, Adrian C Traeger, Gustavo Machado, Mary O'Keeffe, Christopher G Maher. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 07.05.2019.
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Figure 1.
Study flow diagram.