1. Department of Biochemistry Genetics and Microbiology Institute for Sustainable Malaria Control University of Pretoria Lynnwood Road Pretoria 0028 South Africa
2. School of Health Systems and Public Health University of Pretoria, Hatfield Pretoria 0028 South Africa
3. Next Generation Health Council for Scientific and Industrial Research Pretoria 0001 South Africa
4. Department of Drug Discovery and Biomedical Sciences Medical University of South Carolina Charleston SC 29425 USA