1. Eastern Cape Department of Health/University of the Witwatersrand/Fort Hare; Effective Care Research Unit; East London South Africa
2. 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
3. Geneva Foundation for Medical Education and Research; Chemin Edouard Tavan 5 Geneva Switzerland CH-1206