. 2018 Jul 30;20(7):e10131. doi: 10.2196/10131
©Tjeerd W Boonstra, Jennifer Nicholas, Quincy JJ Wong, Frances Shaw, Samuel Townsend, Helen Christensen. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 30.07.2018.
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Figure 4.
Global positioning system location data of participants during study.