1. Department of Psychiatry, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung City, Taiwan
2. Department of Psychiatry, Kaohsiung Municipal Siaogang Hospital, Kaohsiung Medical University, Kaohsiung City, Taiwan
3. Institute of Psychology, ELTE Eötvös Loránd University, Budapest, Hungary
4. Centre of Excellence in Responsible Gaming, University of Gibraltar, Gibraltar, Gibraltar
5. Psychology Department, Nottingham Trent University, Nottingham, United Kingdom
6. Department of Neuropsychiatry, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
7. Department of Neuropsychiatry, School of Medicine, Sapporo Medical University, Sapporo, Japan
8. Tokiwa Child Development Center, Tokiwa Hospital, Sapporo, Japan
9. Department of Psychiatry, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung Medical University, Kaohsiung City, Taiwan