Experimental and Clinical Psychopharmacology (2012) - Comment
pubmed: 22182419  doi: 10.1037/a0026543  issn: 1936-2293  issn: 1064-1297 

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Catherine Stanger, Stacy R. Ryan, Hongyun Fu, Reid D. Landes, Bryan A. Jones, Warren K. Bickel, Alan J. Budney