1 School of Psychological Sciences, University of Manchester, Manchester M13 9PL, UK; Greater Manchester West Mental Health NHS Foundation Trust, Manchester, UK. Electronic address: [email protected].
2 Centre for Biostatistics, University of Manchester, Manchester, UK.
3 Newcastle University and Northumberland, Tyne and Wear NHS Mental Health Foundation Trust, Newcastle-upon-Tyne, UK.
4 School of Psychological Sciences, University of Manchester, Manchester M13 9PL, UK; Greater Manchester West Mental Health NHS Foundation Trust, Manchester, UK.