Published on in Vol 8, No 9 (2021): September
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/26134, first published
.
![Social Media Use, Physical Activity, and Internalizing Symptoms in Adolescence: Cross-sectional Analysis Social Media Use, Physical Activity, and Internalizing Symptoms in Adolescence: Cross-sectional Analysis](https://asset.jmir.pub/assets/96bffdc2484b7f9d1cc4897cb3d0968b.png 480w,https://asset.jmir.pub/assets/96bffdc2484b7f9d1cc4897cb3d0968b.png 960w,https://asset.jmir.pub/assets/96bffdc2484b7f9d1cc4897cb3d0968b.png 1920w,https://asset.jmir.pub/assets/96bffdc2484b7f9d1cc4897cb3d0968b.png 2500w)
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