. 2019 Feb 22;11(1):e11474. doi: 10.2196/11474
©Gaye Moore, Helen Wilding, Kathleen Gray, David Castle. Originally published in Journal of Participatory Medicine (http://jopm.jmir.org), 22.02.2019.
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Figure 1.

Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) flow diagram.