. 2020 Nov 11;22(11):e23851. doi: 10.2196/23851
©Marcy G Antonio, Olga Petrovskaya, Francis Lau. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 11.11.2020.
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Figure 1.
The PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) flow chart.