Published on in Vol 21, No 9 (2019): September
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/12500, first published
.
![A Web-Based Photo-Alteration Intervention to Promote Sleep: Randomized Controlled Trial A Web-Based Photo-Alteration Intervention to Promote Sleep: Randomized Controlled Trial](https://asset.jmir.pub/assets/0c161fe8d19c03eb1b331ab8b731dbc7.png 480w,https://asset.jmir.pub/assets/0c161fe8d19c03eb1b331ab8b731dbc7.png 960w,https://asset.jmir.pub/assets/0c161fe8d19c03eb1b331ab8b731dbc7.png 1920w,https://asset.jmir.pub/assets/0c161fe8d19c03eb1b331ab8b731dbc7.png 2500w)
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