. 2020 Dec 9;22(12):e23170. doi: 10.2196/23170
©Haridimos Kondylakis, Dimitrios G Katehakis, Angelina Kouroubali, Fokion Logothetidis, Andreas Triantafyllidis, Ilias Kalamaras, Konstantinos Votis, Dimitrios Tzovaras. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 09.12.2020.
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Figure 1.
The PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) flow diagram. WHO: World Health Organization.