1. Division of Infectious Diseases, Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Torrance, California, USA
2. Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
3. David Geffen School of Medicine at UCLA, Torrance, California, USA
4. Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland, USA