. 2018 Apr 10;20(4):e127. doi: 10.2196/jmir.8884
©Tania Conca, Cecilia Saint-Pierre, Valeria Herskovic, Marcos Sepúlveda, Daniel Capurro, Florencia Prieto, Carlos Fernandez-Llatas. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 10.04.2018.
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Figure 2.
Periods of study used in the analysis.