Affiliation: | 1. City Hospital, Sandwell & West Birmingham Hospitals NHS Trust, Birmingham, UK;2. St John's Hospital, Livingston, UK;3. Maidstone and Tunbridge Wells NHS Trust, Kent, UK;4. Yeovil District Hospital NHS Trust, Yeovil, UK;5. Royal Berkshire Hospitals NHS Trust, Reading, UK;6. Department of Clinical & Experimental Medicine, Faculty of Health & Medical Sciences, University of Surrey, Guildford, UK Surrey & Sussex Healthcare NHS Trust, Guildford, UK;7. School of Medicine, University of Nottingham, Nottingham, UK Royal Derby Hospital, University Hospitals of Derby and Burton NHS Trust, Derby, UK |