1. Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
2. School of Pharmacy and Health Sciences, Department of Pharmaceutics, United States International University-Africa, P.O. Box 14634, Nairobi 00800, Kenya
3. Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Private Bag X1 Matieland, Stellenbosch 7602, South Africa
4. Biomedical Research Unit, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa