. 2017 Oct 11;6(10):e196. doi: 10.2196/resprot.7904
©Zhizun Zhang, Mila C Gonzalez, Stephen S Morse, Venkat Venkatasubramanian. Originally published in JMIR Research Protocols (http://www.researchprotocols.org), 11.10.2017.
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Figure 7.
The formal expression of competency question 2.