1. School of Health Systems and Public Health, University of Pretoria, South Africa
2. Department of Obstetrics and Gynaecology, Victoria Falls Hospital, Zimbabwe
3. Biostatistics and Epidemiology Department, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
4. Research Centre for Maternal, Fetal, Newborn & Child Health Care Strategies, University of Pretoria, South Africa
5. Unit of Obstetrics and Gynaecology, Faculty of Medical and Health Sciences, University of Zimbabwe, Harare, Zimbabwe