Psychology of Addictive Behaviors (2015) - Comment
pubmed: 25938629  doi: 10.1037/adb0000078  issn: 1939-1501  issn: 0893-164x 

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Alan J. Budney, Catherine Stanger, J. Mick Tilford, Emily B. Scherer, Pamela C. Brown, Zhongze Li, Zhigang Li, Denise D. Walker