1. Department of Microbiology and Immunology, Dalhousie University, Halifax, Canada
2. Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX, USA
3. Department of Chemistry and Biochemistry, The University of North Carolina at Greensboro, Greensboro, NC, USA
4. Department of Pathology, Dalhousie University, Halifax, Canada
5. Department of Biology, Dalhousie University, Halifax, Canada
6. Beatrice Hunter Cancer Research Institute, Dalhousie University, Halifax, Canada