1. Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
2. Department of Chemistry, Center for Innovative Technology, Institute of Chemical Biology, and Institute for Integrative Biosystems Research and Education, Vanderbilt University, Nashville, Tennessee, USA
3. Microbiology Department, Moyne Institute of Preventive Medicine, Trinity College, Dublin, Ireland
4. Tennessee Valley Healthcare Systems, U.S. Department of Veterans Affairs, Nashville, Tennessee, USA