. 2021 Feb 8;7(2):e17149. doi: 10.2196/17149
©Emilie Karafillakis, Sam Martin, Clarissa Simas, Kate Olsson, Judit Takacs, Sara Dada, Heidi Jane Larson. Originally published in JMIR Public Health and Surveillance (http://publichealth.jmir.org), 08.02.2021.
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Figure 2.
PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) flowchart.