| Affiliation: | 1. Department of Anaesthesia and Pain Management, Nuffield Department of Anaesthetics, Oxford University Hospitals NHS Foundation Trust, Oxford, UK;2. Gastrointestinal Surgery, Nottingham Digestive Diseases Centre and National Institute for Health Research (NIHR) Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust and University of Nottingham, Queen's Medical Centre, Nottingham, UK;3. Department of Anaesthesia and Peri-operative Medicine, West Suffolk NHS Foundation Trust, Bury St Edmunds, Suffolk, UK |
