Affiliation: | C. P. J. Morton, FRCAnaes, Research Fellow, Department of Anaesthetics, Royal Infirmary, Lauriston Place, Edinburgh EH3 9YW;P. J. Armstrong, BSc, FRCAnaes, Lecturer, Department of Anaesthetics, Royal Infirmary, Lauriston Place, Edinburgh EH3 9YW;J. H. McClure, BSc, FRCAnaes, Consultant, Department of Anaesthetics, Royal Infirmary, Lauriston Place, Edinburgh EH3 9YW |