1. Department of Microbiology and Immunology, University of Western Ontario, London, Ontario, Canada
2. The Lundquist Institute for Biomedical Innovation, Harbor-UCLA Medical Center, Torrance, California, USA
3. David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
4. Division of Infectious Diseases, Department of Medicine, Harbor-UCLA Medical Center, Torrance, California, USA
5. Duke University Medical Center, Durham, North Carolina, USA
6. Division of Molecular Medicine, Department of Medicine, Harbor-UCLA Medical Center, Torrance, California, USA