Published on in Vol 5, No 1 (2021): Jan-Jun
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/18834, first published
.
![User Engagement With Smartphone Apps and Cardiovascular Disease Risk Factor Outcomes: Systematic Review User Engagement With Smartphone Apps and Cardiovascular Disease Risk Factor Outcomes: Systematic Review](https://asset.jmir.pub/assets/64884dd9dbc3eaf367adb261c39e2c0b.png 480w,https://asset.jmir.pub/assets/64884dd9dbc3eaf367adb261c39e2c0b.png 960w,https://asset.jmir.pub/assets/64884dd9dbc3eaf367adb261c39e2c0b.png 1920w,https://asset.jmir.pub/assets/64884dd9dbc3eaf367adb261c39e2c0b.png 2500w)
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