. 2013 Jul 17;15(7):e141. doi: 10.2196/jmir.2413
©Shelagh A Mulvaney, Yun-Xian Ho, Cather M Cala, Qingxia Chen, Hui Nian, Barron L Patterson, Kevin B Johnson. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 17.07.2013.
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Figure 3.
Percent of calls with data per day over 30 days (Dark gray=outbound calls; light gray=inbound calls).