1. Stellenbosch University; Community Health, Faculty of Medicine and Health Sciences; Francie van Zijl Drive Parow Cape Town Western Cape South Africa
2. Stellenbosch University; Centre for Evidence-based Health Care, Faculty of Medicine and Health Sciences; Francie van Zijl Drive Cape Town South Africa 7505
3. University of Stellenbosch; Obstetrics & Gynaecology; Department of Obstetrics & Gynaecology PO Box 19063 Tygerberg Stellenbosch South Africa 7505
4. South African Medical Research Council; South African Cochrane Centre; PO Box 19070 Tygerberg Cape Town South Africa 7505