1. Department of Anaesthetics, Royal Women's Hospital, Brisbane, Queensland
2. Obstetrics and Gynaecology, Department of Anaesthetics, Royal Women's Hospital.
3. Division of Anaesthesiology and Intensive Care, The University of Queensland, Royal Brisbane Hospital.
4. Division of Anaesthesiology and Intensive Care, Royal Brisbane Hospital.
5. School of Pharmacology, The University of Queensland.