Published on in Vol 6, No 4 (2018): Oct-Dec
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/9944, first published
.
![Potential of an Interactive Drug Prevention Mobile Phone App (Once Upon a High): Questionnaire Study Among Students Potential of an Interactive Drug Prevention Mobile Phone App (Once Upon a High): Questionnaire Study Among Students](https://asset.jmir.pub/assets/4247db3fc771dc7124d37432b311c335.png 480w,https://asset.jmir.pub/assets/4247db3fc771dc7124d37432b311c335.png 960w,https://asset.jmir.pub/assets/4247db3fc771dc7124d37432b311c335.png 1920w,https://asset.jmir.pub/assets/4247db3fc771dc7124d37432b311c335.png 2500w)
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