1. Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London, UK
2. Department of Clinical, Educational and Health Psychology, Division of Psychology and Language Sciences, University College London, London, UK
3. South London and Maudsley NHS Foundation Trust, London, UK
4. Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King’s College London & South London and Maudsley NHS Foundation Trust, Bethlem Royal Hospital, Beckenham, Kent, UK