Published on in Vol 7, No 4 (2019): Oct-Dec
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/15974, first published
.
![Effect of Brief Biofeedback via a Smartphone App on Stress Recovery: Randomized Experimental Study Effect of Brief Biofeedback via a Smartphone App on Stress Recovery: Randomized Experimental Study](https://asset.jmir.pub/assets/077e14bcd3890ffded301c7a4e1ba638.png 480w,https://asset.jmir.pub/assets/077e14bcd3890ffded301c7a4e1ba638.png 960w,https://asset.jmir.pub/assets/077e14bcd3890ffded301c7a4e1ba638.png 1920w,https://asset.jmir.pub/assets/077e14bcd3890ffded301c7a4e1ba638.png 2500w)
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