%0 Journal Article %T Potential of an Interactive Drug Prevention Mobile Phone App (Once Upon a High): Questionnaire Study Among Students %A Kapitány-Fövény, Máté %A Vagdalt, Eszter %A Ruttkay, Zsófia %A Urbán, Róbert %A Richman, Mara J %A Demetrovics, Zsolt %J JMIR Serious Games %V 6 %N 4 %@ 2291-9279 %D 2018-12-04 %I JMIR Publications Inc., Toronto, Canada %~ DeepDyve