[1] Univ Duisburg Essen, Gen Psychol Cognit & Ctr Behav Addict Res CeBAR, Forsthausweg 2, D-47057 Duisburg, Germany
[2] Erwin L Hahn Inst Magnet Resonance Imaging, Forsthausweg 2, D-47057 Essen, Germany
[3] Univ Lubeck, Dept Psychiat & Psychotherapy, Res Grp S TEP Subst Use & Related Disorders Treat, Lubeck, Germany
[4] Eotvos Lorand Univ, Inst Psychol, Budapest, Hungary
[5] Hannover Med Sch, Dept Psychosomat Med & Psychotherapy, Hannover, Germany
[6] Justus Liebig Univ Giessen, Dept Psychotherapy & Syst Neurosci, Giessen, Germany
[7] Justus Liebig Univ Giessen, Bender Inst Neuroimaging, Giessen, Germany
[8] Flinders Univ S Australia, Coll Educ Psychol & Social Work, Adelaide, SA, Australia
[9] Univ Amsterdam, Amsterdam Univ Med Ctr, Dept Psychiat, Amsterdam, Netherlands
[10] Arkin Mental Hlth Care, Amsterdam, Netherlands
[11] Amsterdam Publ Hlth Res Inst, Amsterdam, Netherlands
[12] Heidelberg Univ, Med Fac Mannheim, Cent Inst Mental Hlth, Dept Addict Behav & Addict Med, Mannheim, Germany
[13] Hertfordshire Partnership Univ NHS Fdn Trust, Hatfield, Herts, England
[14] Univ Hertfordshire, Sch Life & Med Sci, Ctr Hlth Serv & Clin Res, Hatfield, Herts, England
[15] Univ Cambridge, Sch Clin Med, Cambridge, England
[16] Univ Cambridge, Dept Psychiat, Cambridge, England
[17] Cambridge & Peterborough NHS Fdn Trust, Cambridge, England
[18] Univ Nevada, Dept Psychol, Las Vegas, NV USA
[19] Univ Lausanne UNIL, Inst Psychol, Lausanne, Switzerland
[20] Lausanne Univ Hosp CHUV, Ctr Excess Gambling, Lausanne, Switzerland
[21] Yale Univ, Dept Psychiat Neurosci & Child Study, Sch Med, New Haven, CT USA
[22] Connecticut Council Problem Gambling, Wethersfield, CT USA
[23] Connecticut Mental Hlth Ctr, New Haven, CT USA