1. Centre for Neuropsychopharmacology, Division of Brain Sciences, Faculty of Medicine; Imperial College London; UK
2. Department of Psychobiology; Universidade Federal de São Paulo; Brazil
3. Centre for Affective Disorders, Department of Psychological Medicine; Institute of Psychiatry, Psychology and Neuroscience, King's College London; UK
4. Forensic and Neurodevelopmental Sciences; Institute of Psychiatry, King's College; UK
5. Imanova Ltd.; Centre for Imaging Sciences; UK
6. Department of Neuroimaging; Institute of Psychiatry, King's College; UK
7. Department of Imaging, Division of Experimental Medicine, Department of Medicine; Imperial College; UK
8. National Problem Gambling Clinic, CNWL NHS Foundation Trust; Imperial College London; UK
9. Centre for Gambling Research at UBC, Department of Psychology; University of British Columbia; Canada