Published on in Vol 7, No 4 (2019): April
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/12512, first published
.
![Physical Activity and Mobile Phone Apps in the Preschool Age: Perceptions of Teachers and Parents Physical Activity and Mobile Phone Apps in the Preschool Age: Perceptions of Teachers and Parents](https://asset.jmir.pub/assets/3052f21e1b09defc6078673e5a5cd9b5.png 480w,https://asset.jmir.pub/assets/3052f21e1b09defc6078673e5a5cd9b5.png 960w,https://asset.jmir.pub/assets/3052f21e1b09defc6078673e5a5cd9b5.png 1920w,https://asset.jmir.pub/assets/3052f21e1b09defc6078673e5a5cd9b5.png 2500w)
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