1. Department of Microbiology & Immunology, University of British Columbia, Vancouver, Canada
2. Michael Smith Laboratories, University of British Columbia, Vancouver, Canada
3. Life Sciences Institute and Department of Oral Biological & Medical Sciences, Faculty of Dentistry, University of British Columbia, Vancouver, Canada
4. Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, Canada
5. Department of Biochemistry & Molecular Biology, University of British Columbia, Vancouver, Canada