1. Division of Infectious Diseases, Department of Medicine, Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine, St. Louis, Missouri, USA
2. Department of Immunology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
3. Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
4. Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, Missouri, USA
5. Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, Texas, USA