. 2017 Oct 11;6(10):e195. doi: 10.2196/resprot.7750
©Lisa M Hess, David M Kern, Gebra Cuyun Carter, Katherine Winfree, Liya Wang, Angelina Sontag, Ana B Oton. Originally published in JMIR Research Protocols (http://www.researchprotocols.org), 11.10.2017.
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Figure 2.
Study time frame.