. 2020 Jul 8;8(7):e16521. doi: 10.2196/16521
©Frederick North, Kristine E Luhman, Eric A Mallmann, Toby J Mallmann, Sidna M Tulledge-Scheitel, Emily J North, Jennifer L Pecina. Originally published in JMIR Medical Informatics (http://medinform.jmir.org), 08.07.2020.
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Figure 1.
Message counts by year.