1. Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, Canada
2. Department of Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA, USA
3. Research Service, 151, Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, CA, USA
4. Division of Infectious Diseases, 111F, Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, CA, USA
5. Infectious Bacterial Diseases Research Unit, National Animal Disease Center (NADC), Agricultural Research Service (ARS), United States Department of Agriculture (USDA), Ames, IA, USA