. 2020 Mar 12;22(3):e17425. doi: 10.2196/17425
©Daniel Katz, Ronak Shah, Elizabeth Kim, Chang Park, Anjan Shah, Adam Levine, Garrett Burnett. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 12.03.2020.
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Figure 1.
Participant flow diagram.