1. Section Sports Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
2. Sport, Exercise Medicine and Lifestyle Institute (SEMLI), Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
3. Emeritus Professor of Sport and Exercise Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
4. International Olympic Committee (IOC) Research Centre, Pretoria, South Africa
5. Biostatistics Research Unit, Medical Research Council, Cape Town, South Africa
6. Statistics and Population Studies Department, University of the Western Cape, Cape Town, South Africa
7. Department of Human Movement Science, Cape Peninsula University of Technology, Wellington, South Africa