1. Department of Medicinal Chemistry, Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, 1345 Center Dr., Gainesville, FL 32610 (USA)
2. Department of Molecular Genetics & Microbiology, University of Florida (USA)
3. Department of Epidemiology, University of Florida, P.O. Box 100009, Gainesville, FL 32610 (USA)