1. Professor and Consultant Psychiatrist, School of Sciences, Fleming Building, University of Sunderland, Sunderland SR1 3SD, UK
2. Medical Writer and Publications Manager UK, Medical Department, Janssen-Cilag Ltd, Saunderton, High Wycombe, Buckinghamshire HP14 4HJ, UK
3. Research Nurse, Briars Research Unit, Cherry Knowle Hospital, Ryhope, Sunderland SR2 0NB, UK
4. Consultant Psychiatrist, Queen's Medical Centre, University Hospital, Nottingham NG7 2UH, UK
5. Consultant Psychiatrist, Park Royal Centre for Mental Health, Central Middlesex Hospital, Acton Lane, London NW10 7NS, UK
6. Consultant Psychiatrist, Scunthorpe General Hospital, Cliff Gardens, Scunthorpe, Lincolnshire DN15 7BH, UK