1. Department of Pediatric Infectious Diseases, Vanderbilt University Medical Center, Nashville, Tennessee, USA
2. Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee, USA
3. Department of Health Policy, Vanderbilt University Medical Center, Nashville, Tennessee, USA
4. Vanderbilt Epidemiology PhD Program, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
5. Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
6. Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
7. Department of Obstetrics and Gynecology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
8. Tennessee Valley Healthcare Systems, Department of Veterans Affairs, Nashville, Tennessee, USA