1. Department of Psychiatry, University of Cambridge, Cambridge, UK
2. Cambridge Cognition Ltd, Cambridge, UK
3. Department of Psychiatry, Yale University, New Haven, Connecticut
4. Department of Social Medicine, Bristol University, Bristol, UK
5. Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, Rockville, Maryland
6. MRC/Wellcome Trust Behavioural & Clinical Neurosciences Institute (BCNI), Cambridge, UK