. 2020 Dec 8;22(12):e18959. doi: 10.2196/18959
©Yesul Kim, Christopher Groombridge, Lorena Romero, Steven Clare, Mark Christopher Fitzgerald. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 08.12.2020.
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Figure 1.
PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) flowchart.