1. Department of Child and Adolescent Psychiatry, Taipei City Psychiatric Center Taipei City Hospital Songde Branch Taipei City Taiwan
2. National Addiction Centre, Institute of Psychiatry, Psychology and Neuroscience King's College London and South London and the Maudsley NHS Foundation Trust London UK
3. National Addiction Centre and the Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience King's College London and South London and the Maudsley NHS Foundation Trust London UK