1. Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States
2. Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37232, United States
3. Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States
4. Department of Veterans Affairs, Tennessee Valley Healthcare Systems, Nashville, Tennessee 37212, United States
5. Department of Obstetrics and Gynecology, Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States
6. Department of Chemistry, Fisk University, Nashville, Tennessee 37208, United States
7. Department of Biochemistry, Vanderbilt University, Nashville, Tennessee 37232, United States
8. Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan 48824, United States
9. Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States