1. Division of Infectious Disease Department of Medicine Vanderbilt University Medical Center Nashville TN USA
2. Vanderbilt University Medical SchoolVanderbilt University Nashville TN USA
3. Texas A&M UniversityCollege of Agriculture and Life Sciences College Station TX USA
4. Department of Medicine Meharry Medical College Nashville TN USA
5. Department of Pathology, Microbiology and Immunology Department of Obstetrics and Gynecology Vanderbilt University Nashville TN USA