. 2020 Apr 27;22(4):e19076. doi: 10.2196/19076
©Heini Utunen, Ngouille Ndiaye, Corentin Piroux, Richelle George, Melissa Attias, Gaya Gamhewage. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 27.04.2020.
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Figure 2.
World Health Organization regions.