. 2015 Jul 1;17(7):e159. doi: 10.2196/jmir.4103
©Janka Koschack, Lara Weibezahl, Tim Friede, Wolfgang Himmel, Philip Makedonski, Jens Grabowski. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 01.07.2015.
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Figure 1.
Flowchart of the data extraction and reduction process.