1. The University of Adelaide; ARCH: Australian Research Centre for Health of Women and Babies, Discipline of Obstetrics and Gynaecology; Women's and Children's Hospital 72 King William Road Adelaide 5006 Australia South Australia
2. Geneva Switzerland
3. University of the Witwatersrand, University of Fort Hare, Eastern Cape Department of Health; Department of Obstetrics and Gynaecology, East London Hospital Complex; Frere and Cecilia Makiwane Hospitals Private Bag X 9047 East London Eastern Cape South Africa 5200