1. North Wales Clinical Psychology Program, Bangor University, Bangor, UK
2. Substance Misuse Services, Betsi Cadwaladr University Health Board, Rhyl, UK
3. Department of Psychology, BPP University, London, UK
4. School of Human and Behavioural Sciences, Bangor University, Bangor, UK
5. North Wales Recovery Community, Bangor, UK
6. Paediatric Psychology Services, Betsi Cadwaladr University Health Board, Bodelwyddan, UK