. 2020 Jul 31;8(7):e14013. doi: 10.2196/14013
©Jeong Sun Ahn, Heejin Lee, Jiae Kim, Haemin Park, Dong Woo Kim, Jung Eun Lee. Originally published in JMIR mHealth and uHealth (http://mhealth.jmir.org), 31.07.2020.
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Figure 1.
Flow diagram of participants.