. 2021 Nov 11;9(11):e32093. doi: 10.2196/32093
©Bohee Lee, Siti Aishah Ibrahim, Tiying Zhang. Originally published in JMIR mHealth and uHealth (https://mhealth.jmir.org), 11.11.2021.
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Figure 3.
Governments' COVID-19 policy commencement dates and release dates of the included apps.