. 2016 Sep 27;5(3):e191. doi: 10.2196/resprot.6466
©Jindong Ding Petersen, Volkert Siersma, Connie Thurøe Nielsen, Mikkel Vass, Frans Boch Waldorff. Originally published in JMIR Research Protocols (http://www.researchprotocols.org), 27.09.2016.
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Figure 1.
The study timeline.