1. Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, California, USA
2. Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, New York, USA
3. Department of Pathology, Microbiology and Immunology, Vanderbilt University, Nashville, Tennessee, USA
4. Department of Pediatrics, Vanderbilt University, Nashville, Tennessee, USA
5. Vanderbilt Vaccine Center, Vanderbilt University, Nashville, Tennessee, USA
6. The Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, California, USA