1. Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong P.R. China
2. Centre for Infection; Division of Cellular and Molecular Medicine; St. George's Hospital; University of London; SW17 0RE UK
3. Department of Oncology; Division of Cellular and Molecular Medicine; St. George's Hospital; University of London; Jenner Wing London SW17 0RE UK
4. Centre of Excellence for Pharmaceutical Sciences; Faculty of Health Sciences; North-West University; Potchefstroom 2520 South Africa