Affiliation: | Consultant in Anaesthesia, Leeds General Infirmary, Great George Street, Leeds LS1 3EX, UK;Consultant in Anaesthesia and Intensive Care Medicine, Leeds General Infirmary, Great George Street, Leeds LS1 3EX, UK;Consultant in Intensive Care and Respiratory Medicine, St James''s University Hospital, Beckett Street, Leeds LS9 7TF, UK |