1. SAMRC/CPUT/Cardiometabolic Health Research Unit, Department of Biomedical Sciences, Faculty of Health and Wellness Science, Cape Peninsula University of Technology, Cape Town 7530, South Africa
2. Division of Chemical Pathology, Faculty of Medicine and Health Sciences, National Health Laboratory Service (NHLS) and University of Stellenbosch, Cape Town 7505, South Africa
3. Non-Communicable Disease Research Unit, South African Medical Research Council, Parow, Cape Town 7505, South Africa
4. Department of Medicine, University of Cape Town, Cape Town 7925, South Africa
5. Sefako Makgatho Health Sciences University, Ga-Rankuwa 0208, South Africa