Published on in Vol 3, No 1 (2020): Jan-Dec
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/20747, first published
.
![Effect of a Smartphone-Based App on the Quality of Life of Patients With Heart Failure: Randomized Controlled Trial Effect of a Smartphone-Based App on the Quality of Life of Patients With Heart Failure: Randomized Controlled Trial](https://asset.jmir.pub/assets/14dd7516a6ce21de46b541b2596e4616.png 480w,https://asset.jmir.pub/assets/14dd7516a6ce21de46b541b2596e4616.png 960w,https://asset.jmir.pub/assets/14dd7516a6ce21de46b541b2596e4616.png 1920w,https://asset.jmir.pub/assets/14dd7516a6ce21de46b541b2596e4616.png 2500w)
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