1 School of Psychology, University of Birmingham, Birmingham, UK.
2 Birmingham and Solihull Mental Health Foundation NHS Trust, Birmingham, UK.
3 Fleming House, Rampton Hospital, Retford, UK.
4 Cochrane Schizophrenia Group, The University of Nottingham, Nottingham, UK.
5 Cochrane Schizophrenia Group, Institute of Mental Health, University of Nottingham, Nottingham, UK.
6 Systematic Review Solutions Ltd, The Ingenuity Centre, The University of Nottingham, Nottingham, UK.
7 Division of Nursing, Midwifery & Social Work, School of Health Sciences, Faculty of Biology, Medicine & Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK.
8 Department of Clinical Psychology, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China.