Are cannabis prevalence estimates comparable across countries and regions? A cross-cultural validation using search engine query data
Publishing year
    
          2013
    
      Type of Document
    
          Peer reviewed article/paper
    
      Document language
    
          English
    
      Volume
    
          24
    
      Number
    
          1
    
      Pages
    
          23–29
    
      Keywords
    
          cannabis use prevalence, cultural effects, validation, school survey
    
      Added
    
          Ludwig Kraus 31/07/2015