1. Division Family Medicine , Johannesburg, , South Africa
2. School of Clinical Medicine, , Johannesburg, , South Africa
3. University of the Witwatersrand , Johannesburg, , South Africa
4. Department of Institutional Intelligence , Pretoria, , South Africa
5. University of South Africa , Pretoria, , South Africa
6. Ukwanda Centre for Rural Health , Stellenbosch, , South Africa
7. Department of Global Health , Stellenbosch, , South Africa
8. Stellenbosch University , Stellenbosch, , South Africa