. 2015 Apr 28;17(4):e107. doi: 10.2196/jmir.3774
©Wilma Elzeline Waterlander, Yannan Jiang, Ingrid Hendrika Margaretha Steenhuis, Cliona Ni Mhurchu. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 28.04.2015.
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Figure 2.
Study flow diagram.