1. Ekurhuleni District Department of Health Gemiston South Africa
2. Department of Obstetrics and Gynecology, Faculty of Health Sciences University of the Witwatersrand Johannesburg South Africa
3. Maternal and Infant Health Care Strategies Research Unit, South African Medical Research Council University of Pretoria Pretoria South Africa
4. Ekurhuleni Clinical Research Center: A JBI Affiliated Group University of Adelaide Adelaide Australia
5. Physiotherapy Department, School of Therapeutic Sciences, Faculty of Health Sciences University of the Witwatersrand Johannesburg South Africa
6. Department of Pediatrics University of Pretoria Pretoria South Africa
7. Research Center for Maternal, Fetal, Newborn and Child Health Care Strategies University of Pretoria Pretoria South Africa
8. Department of internal Medicine, Charlotte Maxeke Johannesburg Academic Hospital, Faculty of Health Sciences University of the Witwatersrand Johannesburg South Africa
9. Department of Public Health Medicine, Steve Biko Academic Hospital University of Pretoria Pretoria South Africa