. 2017 Jan 23;6(1):e12. doi: 10.2196/resprot.6066
©Allison M Burton-Chase, Wendy M Parker, Kelsey Hennig, Faith Sisson, Linda L Bruzzone. Originally published in JMIR Research Protocols (http://www.researchprotocols.org), 23.01.2017.
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Figure 2.
Facebook recruitment post.