Affiliation: | 1. School of Health Sciences, University of Manchester, M13 9PL, UK;2. Salford Royal NHS Foundation Trust, Salford, M6 8HD, UK;3. University Hospitals Bristol NHS Foundation Trust, UK;4. St James University Hospital, Leeds, UK;5. Newcastle Upon Tyne Hospitals NHS Foundation Trust, UK;6. University Hospitals North Midlands NHS Trust, UK;7. Nottingham University Hospitals NHS Foundation Trust, UK;8. Oxford University Hospitals NHS Foundation Trust, UK;9. St Marks Hospital, London Northwest Healthcare Trust, UK;10. University College London Hospital NHS Foundation Trust, UK;11. Galen Research Ltd, Manchester, UK |