. 2016 Nov 29;5(4):e228. doi: 10.2196/resprot.6624
©Sherry L Pagoto, Katie Baker, Julia Griffith, Jessica L Oleski, Ashley Palumbo, Barbara J Walkosz, Joel Hillhouse, Kimberly L Henry, David B Buller. Originally published in JMIR Research Protocols (http://www.researchprotocols.org), 29.11.2016.
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Figure 1.
Study design.