Affiliation: | Specialist Registrar in Anaesthesia, Queen''s Medical Centre, Nottingham University Hospitals NHS Trust, Derby Road, Nottingham NG7 2UH, UK;Professor of Anaesthesia and Intensive Care, University Division of Anaesthesia and Intensive Care, Queen''s Medical Centre, Nottingham University Hospitals NHS Trust, Derby Road, Nottingham NG7 2UH, UK |