. 2014 Jan 14;16(1):e10. doi: 10.2196/jmir.2875
©Fabian Sudau, Tim Friede, Jens Grabowski, Janka Koschack, Philip Makedonski, Wolfgang Himmel. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 14.01.2014.
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Figure 4.
Venn diagram showing the user sets used in the clusterings.