©Ernesto D. Zárate-Bravo, Juan-Pablo García-Vázquez, Engracia Torres-Cervantes, Gisela Ponce, Ángel G Andrade, Maribel Valenzuela-Beltrán, Marcela D Rodríguez. Originally published in JMIR mHealth and uHealth (http://mhealth.jmir.org), 02.03.2020.
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