1. Department of Emergency Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
2. Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
3. Department of Health Policy, Vanderbilt University Medical Center, Nashville, Tennessee, USA
4. CDC COVID-19 Response Team, Atlanta, Georgia, USA
5. Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee, USA
6. Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee, USA