Peter Kam MBBS, MD, FRCA, FANCZA, FFARCSI, FHKCA (Hon) Nuffield Professor of Anaesthetics, Sydney Medical School, University of Sydney Royal Prince Alfred Hospital Camperdown, Australia Ian Power BSc (Hon), MD, FRCA, FFPMANZCA, FANZCA, FRCSEd, FRCP Edin, FFPFRCA Emeritus Professor at the University of Edinburgh, Edinburgh, United Kingdom