Government of the United States of America - National Center for Immunization and Respiratory Diseases, Government of the United States of America - National Center for Immunization and Respiratory Diseases, Government of the United States of America - National Center for Immunization and Respiratory Diseases, Baylor Scott & White Health, Baylor University - Baylor Scott & White Health Medical Center - Temple, Baylor University - Baylor Scott & White Health Medical Center - Temple, University of Massachusetts Worcester - UMass Chan Medical School, Harvard University - Beth Israel Deaconess Medical Center, Emory University - Department of Medicine, Hennepin County Medical Center, Intermountain Medical Center, Intermountain Medical Center, Johns Hopkins University - Department of Medicine, Johns Hopkins University - Department of Medicine, Yeshiva University - Albert Einstein College of Medicine, Yeshiva University - Albert Einstein College of Medicine, Oregon Health and Science University - Department of Medicine, Stanford University - School of Medicine, University of California, Los Angeles (UCLA) - Department of Medicine, University of California, Los Angeles (UCLA) - Department of Medicine, University of Colorado at Denver - Department of Emergency Medicine, University of Colorado at Denver - Department of Emergency Medicine, University of Iowa - Department of Emergency Medicine, University of Miami - Department of Medicine, University of Michigan at Ann Arbor - School of Public Health, University of Michigan at Ann Arbor - Department of Microbiology and Immunology, University of Washington - Division of Pulmonary, Critical Care and Sleep Medicine, Vanderbilt University - Department of Medicine, Wake Forest University - School of Medicine, Washington University in St. Louis - Department of Medicine, Vanderbilt University - Department of Medicine, Vanderbilt University - Department of Pediatrics, Vanderbilt University - Medical Center, Vanderbilt University - Medical Center, Vanderbilt University Medical Center - Vanderbilt Institute for Clinical and Translational Research, Vanderbilt University - Medical Center, Vanderbilt University - Department of Medicine, Vanderbilt University - Medical Center, Vanderbilt University - Medical Center, Government of the United States of America - National Center for Immunization and Respiratory Diseases, Government of the United States of America - National Center for Immunization and Respiratory Diseases, Vanderbilt University Medical Center - Vanderbilt Institute for Clinical and Translational Research and Government of the United States of America - National Center for Immunization and Respiratory Diseases