1. Traditional Medicine Laboratory, School of Nursing and Public Health, College of Health Sciences, University of KwaZulu-Natal, Durban 4041, South Africa
2. Department of Biomedical Sciences, Faculty of Natural Science, Mangosuthu University of Technology, Durban 4026, South Africa
3. Africa Health Research Institute, 3rd Floor K-RITH Tower Building, Nelson R. Mandela School of Medicine, Durban 4001, South Africa