1. Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, USA
2. Department of Medicine, Division of Infectious Disease, Vanderbilt University Medical Center, Nashville, Tennessee, USA
3. Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
4. Department of Obstetrics and Gynecology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
5. Tennessee Valley Healthcare System, Department of Veterans Affairs, Nashville, Tennessee, USA
6. Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, Michigan, USA
7. Cell and Molecular Biology Program, Michigan State University, East Lansing, Michigan, USA