Stanford University School of Medicine - Baxter Laboratory, University of California, San Francisco (UCSF) - Department of Microbiology and Immunology, University of California, San Francisco (UCSF) - Department of Microbiology and Immunology, Stanford University School of Medicine - Baxter Laboratory, Stanford University School of Medicine - Department of Pathology, Stanford University School of Medicine - Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine - Department of Pathology, Stanford University School of Medicine - Baxter Laboratory, Stanford University School of Medicine - Baxter Laboratory, University of California, San Francisco (UCSF) - Department of Microbiology and Immunology, Stanford University School of Medicine - Baxter Laboratory, Stanford University School of Medicine - Department of Pediatric Pulmonary Medicine, Stanford University School of Medicine - Department of Pathology, Stanford University School of Medicine - Department of Pediatric Pulmonary Medicine, Stanford University School of Medicine - Department of Pathology, University of California, San Francisco (UCSF) - Department of Microbiology and Immunology and Stanford University School of Medicine - Baxter Laboratory