scholarly journals Cannabis use among middle and high school students in Ontario: a school-based cross-sectional study

CMAJ Open ◽  
2018 ◽  
Vol 6 (1) ◽  
pp. E50-E56 ◽  
Author(s):  
Hugues Sampasa-Kanyinga ◽  
Hayley A. Hamilton ◽  
Allana G. LeBlanc ◽  
Jean-Philippe Chaput
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