1. Department of Biology, Niagara University , Niagara Falls, New York, USA
2. Department of Pediatrics, Carver College of Medicine, University of Iowa , Iowa City, Iowa, USA
3. Division of Infectious Diseases, Los Angeles Biomedical Research Institute and Harbor-UCLA Medical Center , Torrance, California, USA
4. Department of Medicine, David Geffen School of Medicine at UCLA , Los Angeles, California, USA
5. Department of Medicine, Section of Infectious Disease, University of Wisconsin , Madison, Wisconsin, USA
6. Department of Medical Microbiology and Immunology, University of Wisconsin , Madison, Wisconsin, USA
7. Department of Microbiology, University of Georgia , Athens, Georgia, USA
8. Department of Molecular Microbiology and Immunology, Brown University , Providence, Rhode Island, USA
9. Department of Molecular Physiology and Biophysics, Carver College of Medicine, University of Iowa , Iowa City, Iowa, USA
10. Department of Microbiology and Immunology, Carver College of Medicine, University of Iowa , Iowa City, Iowa, USA