. 2019 Feb 28;21(2):e12895. doi: 10.2196/12895
©Priya Lall, Rebecca Rees, Gloria Chun Yi Law, Gerard Dunleavy, Živa Cotič, Josip Car. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 28.02.2019.
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Figure 2.
Preferred Reporting Items for Systematic Reviews and Meta-Analyses chart.