1. Institute for Health and Behaviour, Integrative Research Unit on Social and Individual Development (INSIDE), University of Luxembourg, Esch-sur-Alzette, Luxembourg
2. Internet and Gambling Disorders Clinic, Department of Adult Psychiatry, Cliniques universitaires Saint-Luc, Brussels, Belgium
3. Laboratory for Experimental Psychopathology, Psychological Sciences Research Institute, Université catholique de Louvain, Louvain-la-Neuve, Belgium
4. School of Psychology, The University of Adelaide, Adelaide, SA, Australia
5. National Hospital Organization Kurihama Medical and Addiction Center, Yokosuka, Kanagawa, Japan
6. Specialized Program in Behavioural Addictions, Addiction Division, Department of Mental Health and Psychiatry, University Hospitals of Geneva, Geneva, Switzerland
7. Research Unit Addictive Disorders, Department of Psychiatry, Faculty of Medicine, University of Geneva, Geneva, Switzerland
8. National Problem Gambling Clinic, and Faculty of Medicine, Imperial College London, London, UK
9. Mental Health Institute of the Second Xiangya Hospital, Central South University, Changsha, China
10. Department of Psychiatry, College of Medicine, The Catholic University of Korea, Seoul, South Korea
11. Departments of Psychiatry and Neuroscience, Child Study Center, and The National Center on Addiction and Substance Abuse, Yale University School of Medicine and Connecticut Mental Health Center, New Haven, CT, USA
12. Centre for Youth Substance Abuse Research, The University of Queensland, Brisbane, QLD, Australia
13. Department of Mental Health and Substance Abuse, WHO Headquarters, Geneva, Switzerland