1. Psychosis Research Unit, Greater Manchester West Mental Health NHS Foundation Trust, Manchester, UK
2. School of Psychological Sciences, University of Manchester, Manchester, UK
3. Institute of Psychology, Health and Society, University of Liverpool, Liverpool, UK
4. The Spectrum Centre for Mental Health Research, University of Lancaster, Lancaster, UK
5. School of Social Sciences, University of Manchester, Manchester, UK
6. Centre for Biostatistics, University of Manchester, Manchester, UK