. 2017 Aug 2;19(8):e281. doi: 10.2196/jmir.7782
©Orlaith Mairead Duff, Deirdre MJ Walsh, Bróna A Furlong, Noel E O'Connor, Kieran A Moran, Catherine B Woods. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 02.08.2017.
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Figure 1.
Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) flow diagram of reviewed and included studies.