1. Invicro London, Hammersmith Hospital, London, UK
2. Clinical Psychopharmacology Unit, University College London, London, UK
3. Division of Brain Sciences, Imperial College London, London, UK
4. Addiction and Mental Health Group (AIM), Department of Psychology, University of Bath, Bath, UK
5. National Addiction Centre, Institute of Psychiatry, Psychology and Neuroscience, London, UK
6. Centre for Neuroimaging Sciences, Institute of Psychiatry, Psychology and Neuroscience, Kings College London, London, UK
7. Division of Psychiatry, University College London, London, UK
8. Psychiatric Imaging, MRC London Institute of Clinical Sciences, Imperial College London, Hammersmith Hospital, London, UK
9. The Beckley Foundation, Oxford, UK