1. I. Power, FCAnaes, Lecturer, University Department of Anaesthetics, Royal Infirmary, Edinburgh.
2. W.A. Chambers, MD, FCAnaes, Consultant, The City Hospital, Edinburgh.
3. I.A. Greer, MD, MRCP, MRCOG, Lecturer, University Department of Obstetrics and Gynaecology, Centre for Reproductive Biology, Edinburgh EH3 9EW.
4. D. Ramage, FCAnaes, University Department of Anaesthetics, Royal Infirmary, Edinburgh.
5. E. Simon, MB, ChB, Registrars, University Department of Anaesthetics, Royal Infirmary, Edinburgh.