Published on in Vol 8, No 7 (2020): July
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/18465, first published
.
![Development and Preliminary Evaluation of the Effects of an mHealth Web-Based Platform (HappyAir) on Adherence to a Maintenance Program After Pulmonary Rehabilitation in Patients With Chronic Obstructive Pulmonary Disease: Randomized Controlled Trial Development and Preliminary Evaluation of the Effects of an mHealth Web-Based Platform (HappyAir) on Adherence to a Maintenance Program After Pulmonary Rehabilitation in Patients With Chronic Obstructive Pulmonary Disease: Randomized Controlled Trial](https://asset.jmir.pub/assets/5a566e652b0c160c405ced70bf92fd40.png 480w,https://asset.jmir.pub/assets/5a566e652b0c160c405ced70bf92fd40.png 960w,https://asset.jmir.pub/assets/5a566e652b0c160c405ced70bf92fd40.png 1920w,https://asset.jmir.pub/assets/5a566e652b0c160c405ced70bf92fd40.png 2500w)
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