1. Department of Family Medicine and Rural Health, Faculty of Health Sciences, Walter Sisulu University, Cecilia Makiwane Hospital, East London Hospital Complex, East London, South Africa
2. School of Science and Technology, Sefako Makgatho Health Sciences University, Ga-Rankuwa, Pretoria, South Africa
3. Department of Public Health, Faculty of Health Sciences, University of Fort Hare, East London, South Africa
4. The Relevance Network, Johannesburg, South Africa
5. University College Dublin, Mater Misericordiae University Hospital, Catherine McAuley Education and Research Centre, Dublin, Ireland
6. Population Dynamics and Sexual and Reproductive Health, African Population and Health Research Centre, APHRC Campus, Manga Close, Nairobi, Kenya
7. South African Medical Research Council Microbial Water Quality Monitoring Centre, Faculty of Science and Agriculture, University of Fort Hare, Alice, South Africa