1. University of Leicester Medical School, Leicester, UK
2. Ulverscroft Eye Unit, University of Leicester, Leicester, UK
3. Department of Neuroscience, Psychology and Behaviour, University of Leicester, Robert Kilpatrick Clinical Sciences Building, Leicester Royal Infirmary, UK
4. Leicestershire Partnership NHS Trust, Bradgate Unit, Glenfield Hospital, Leicester, UK
5. NIHR Leicester Cardiovascular Biomedical Research Unit, Glenfield Hospital, Leicester, UK
6. Adult Social and Epidemiological Psychiatry and Disability Research Group, Department of Health Sciences, University of Leicester, Leicester General Hospital, Leicester, UK