James , MRCP , Tim , FRCA , FFICM (Consultant in Intensive Care Medicine and Anaesthesia , Raigmore Hospital , Inverness) Hooper , FRCA (Consultant in Anaesthesia , Southmead Hospital , Bristol) Nickells , Annabel (Specialist Trainee in Anaesthesia , Severn Deanery) Pearson , Ben , Bristol) Walton , Sonja , University of Western Ontario , Canada) Payne