1. Institute of Psychiatry, Psychology and Neuroscience, King’s College London, PO72, De Crespigny Park, Denmark Hill, London, SE5 8AF, UK
2. East London NHS Foundation Trust, London, UK
3. Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
4. South London and Maudsley NHS Foundation Trust, Bethlem Royal Hospital, Beckenham, Kent, UK