Authors: Steppan, M., Kraus, L., Piontek, D. & Siciliano, VKeywords: cannabis use prevalence, cultural effects, validation, school surveyAdded: Ludwig Kraus 31/07/2015 View article / document (501.88 KB)Publishing year: 2013Volume: 24Number: 1Pages: 23–29Type of Document: Peer reviewed article/paperDocument language: English