1. University of the Witwatersrand, Department of Pharmacy and Pharmacology, 7 York Road, Parktown, 2193, Johannesburg, South Africa
2. University of the Witwatersrand, Department of Pharmacy and Pharmacology, 7 York Road, Parktown, 2193, Johannesburg, South Africa,
3. Integral University, Department of Industrial Chemistry Lucknow 226026, India
4. University of the Witwatersrand, Department of Medical Oncology 7 York Road, Parktown, 2193, Johannesburg, South Africa