Association of comorbid psychopathology with the duration of cannabis use disorders
Psychology of Addictive Behaviors (2016) - Comment
pubmed: 26766543  doi: 10.1037/adb0000151  issn: 1939-1501  issn: 0893-164x 

Richard F. Farmer, Derek B. Kosty, John R. Seeley, Jeff M. Gau, Susan C. Duncan, Denise D. Walker, Peter M. Lewinsohn