1. Committee on Microbiology, The University of Chicago, Chicago, Illinois, USA
2. Department of Pathology, The University of Chicago, Chicago, Illinois, USA
3. Department of Laboratory Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
4. Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
5. Department of Immunology, The University of Texas Southwestern Medical Center, Dallas, Texas, USA
6. Department of Microbiology and Immunology, University of Michigan, Ann Arbor, Michigan, USA
7. Department of Pathology & Immunology, Washington University, St. Louis, Missouri, USA
8. Department of Biochemistry & Molecular Biophysics, Washington University, St. Louis, Missouri, USA
9. Department of Molecular Microbiology, Washington University, St. Louis, Missouri, USA
10. Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
11. Department of Microbiology, The University of Chicago, Chicago, Illinois, USA