1. Department of Basic Medical Sciences, Faculty of Health Sciences, Durban University of Technology, Durban, South Africa
2. Optics and Imaging Centre, Doris Duke Medical Research Institute, University of KwaZulu-Natal, Durban, South Africa
3. Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
4. Discipline of Dietetics and Nutrition, College of Agriculture, University of KwaZulu-Natal, Durban, South Africa