C Kan1, S J Kaar2, M Eisa3, L Jones2, J Beckett2, O Mustafa4, K Ismail1,4. 1. Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience. 2. General Adult Psychiatry, South London and Maudsley NHS Foundation Trust. 3. General Adult Psychiatry, Barnet, Enfield and Haringey NHS Trust. 4. Department of Diabetes, King's College Hospital, King's Health Partners, London, UK.