[1] NIDA, Clin Psychoneuroendocrinol & Neuropsychopharmacol, Translat Addict Med Branch, Intramural Res Program,NIH, Bethesda, MD 20892 USA
[2] NIAAA, Div Intramural Clin & Biol Res, NIH, Bethesda, MD 20892 USA
[3] NIH, Ctr Compuls Behav, Intramural Res Program, Bethesda, MD USA
[4] Univ Calif Los Angeles, Dept Psychol, Los Angeles, CA USA
[5] Univ Calif Los Angeles, Dept Psychiat, Los Angeles, CA USA
[6] Brown Univ, Ctr Alcohol & Addict Studies, Dept Behav & Social Sci, Providence, RI USA
[7] Johns Hopkins Univ, Sch Med, Dept Med, Div Addict Med, Baltimore, MD USA
[8] Georgetown Univ, Med Ctr, Dept Neurosci, Washington, DC USA