1. Division of Psychiatry, Imperial College London, Du Cane Road, London, W12 ONN, UK
2. Prescribing Observatory for Mental Health, Centre for Quality Improvement, Royal College of Psychiatrists, 21 Prescot Street, Whitechapel, London E1 8BB, UK
3. King’s College London Institute of Psychiatry, Psychology and Neuroscience, London, UK
4. Prescribing Observatory for Mental Health, Centre for Quality Improvement, Royal College of Psychiatrists, London, UK
5. Division of Psychiatry, Imperial College London, London, UK