1. Division of Nursing, Midwifery and Social Work; Faculty of Medicine, Biology and Health; University of Manchester; Manchester UK
2. Patient Safety and Translational Research Centre; Imperial College London; London UK
3. Joint Faculty of Health, Social Care and Education; Kingston University and St George's University of London; London UK
4. Department of Health Sciences; University of York; York UK
5. Social Science Research Unit; Institute of Education; University College London; London UK
6. Section of Mental Health Nursing; Health Service and Population Research; Institute of Psychiatry, Psychology and Neuroscience; Kings College London; London UK