1. School of Pharmacy, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
2. Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown 2193, South Africa
3. Department of Pharmacognosy, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey