[1] Univ Vermont, Dept Psychiat, Vermont Ctr Tobacco Regulatory Sci, UHC Campus,1 South Prospect St, Burlington, VT 05401 USA
[2] Univ Vermont, Dept Psychol Sci, Vermont Ctr Tobacco Regulatory Sci, UHC Campus,1 South Prospect St, Burlington, VT 05401 USA
[3] Brown Univ, Ctr Alcohol & Addict Studies, Providence, RI 02912 USA
[4] Johns Hopkins Sch Med, Dept Psychiat & Behav Sci, Baltimore, MD USA