[1] Natl Problem Gambling Clin, London, England
[2] Natl Ctr Gaming Disorders, London, England
[3] Univ Cambridge, Dept Psychiat, Cambridge, England
[4] Univ Seville, Inst Biomed Sevilla, Dept Fisiol Med & Biofis, Seville, Spain
[5] Univ Chicago, Dept Psychiat & Behav Neurosci, Chicago, IL 60637 USA
[6] Maastricht Univ, Care & Publ Hlth Res Inst, Dept Int Hlth, Maastricht, Netherlands
[7] Univ Hertfordshire, Dept Clin Pharmacol & Biol Sci, Hatfield, Herts, England
[8] Univ Hertfordshire, Sch Life & Med Sci, Hatfield, Herts, England
[9] Hertforshire Partnership Univ NHS Fdn Trust, Welwyn Garden City, Herts, England
[10] Univ Sussex, Sch Psychol, Brighton, E Sussex, England
[11] Univ Sussex, Sussex Addict Res & Intervent Ctr, Brighton, E Sussex, England
[12] Univ Sussex, Sussex Neurosci, Brighton, E Sussex, England
[13] Univ Sussex, Fac Brain Sci, Brighton, E Sussex, England
[14] Univ Lincoln, Coll Social Sci, Sch Psychol, Lincoln, England
[15] Swansea Univ, Dept Psychol, Swansea, W Glam, Wales
[16] Reykjavik Univ, Dept Psychol, Reykjavik, Iceland
[17] Univ Cambridge, Dept Psychol, Cambridge, England
[18] Univ Cambridge, Behav & Clin Neurosci Inst, Cambridge, England
[19] Univ Southampton, Fac Environm & Life Sci, Ctr Innovat Mental Hlth, Sch Psychol, Southampton, Hants, England
[20] Univ Southampton, Fac Med, Dept Psychiat, Southampton, Hants, England
[21] Solent NHS Trust, Southampton, Hants, England
[22] NYU, Hassenfeld Childrens Hosp NYU Langone, Child Study Ctr, New York, NY USA
[23] Univ Nottingham, Sch Med, Div Psychiat & Appl Psychol, Nottingham, England
[24] Federat Univ, Sch Hlth, Ballarat, Vic, Australia
[25] Deakin Univ, Sch Psychol, Geelong, Vic, Australia
[26] Univ Melbourne, Melbourne Grad Sch Educ, Melbourne, Vic, Australia
[27] Southern Hlth NHS Fdn Trust, Southampton, Hants, England