Media type: E-Article Title: Factors associated with the onset of cannabis use: a systematic review of cohort studies Contributor: Guxensa, Mònica; Nebot, Manel; Ariza, Carles; Ochoa, Darío Published: Elsevier BV, 2007 Published in: Gaceta Sanitaria, 21 (2007) 3, Seite 252-260 Language: English DOI: 10.1157/13106811 ISSN: 0213-9111 Origination: Footnote: Access State: Open Access