1. Department
of Chemistry, University of Cape Town,
Private Bag, Rondebosch 7701, South Africa
2. Department of Biological Sciences, University of the Pacific, Stockton, California 95211, United States
3. Division of Pharmacology, Department
of Medicine, University of Cape Town, K45,
OMB, Groote Schuur Hospital, Observatory, 7925, South Africa
4. Institute of Infectious Disease and
Molecular Medicine, University of Cape Town, Rondebosch 7701, South Africa