. 2013 Sep 11;2(2):e35. doi: 10.2196/resprot.2416
©Paul Krebs, Jack E Burkhalter, Bert Snow, Jeff Fiske, Jamie S Ostroff. Originally published in JMIR Research Protocols (http://www.researchprotocols.org), 11.09.2013.
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Figure 5.
Example of revised game interface.