1. East London Foundation Trust, London, UK
2. Division of Psychiatry, University College London, UK
3. Liverpool John Moores University, UK
4. Clinical Toxicology, Guy’s and St Thomas’ NHS Foundation Trust, London, UK
5. Clinical Toxicology, Faculty of Life Sciences and Medicine, King’s College London, London, UK
6. Consultant Psychiatrist, Oxleas NHS Foundation Trust, London, UK
7. Department of Psychosis Studies, the Institute of Psychiatry, Psychology and Neuroscience, King’s College London, DeCrespigny Park, London, SE5 8AF, UK