. 2019 Aug 2;21(8):e13363. doi: 10.2196/13363
©Louise Poppe, Ilse De Bourdeaudhuij, Maïté Verloigne, Samyah Shadid, Jelle Van Cauwenberg, Sofie Compernolle, Geert Crombez. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 02.08.2019.
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Figure 1.
Design of the randomized controlled trials.