1. 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
2. University of the Witwatersrand/University of Fort Hare/East London Hospital complex; Effective Care Research Unit; East London South Africa
3. University of California; Global Health Sciences; 50 Beale Street San Francisco California USA 94105