1. University of Birmingham and Hon. Consultant Psychiatrist, Northern Birmingham Mental Health Trust, Birmingham, UK,
2. Academic Unit, Northern Birmingham Mental Health Trust, Birmingham, UK
3. MRC - BSU and Hon. Clin. Psychol. to the Addenbrookes' NHS Trust. MRC Biostatistics Unit, Institute of Public Health, University Forvie Site, Robinson Way, Cambridge, CB2 2SR, UK
4. Professor of Community Psychiatry, University of Birmingham and Hon Consultant Psychiatrist, Northern Birmingham Mental Health Trust. Academic Unit, Northern Birmingham Mental Health Trust, Birmingham, UK