1. South Carolina SmartState Center for Healthcare Quality, Arnold School of Public Health, University of South Carolina, Columbia, SC;
2. Department of Health Promotion, Education and Behavior, Arnold School of Public Health, University of South Carolina, Columbia, SC;
3. Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC;
4. Mayo Vaccine Research Group, Mayo Clinic and Foundation, Rochester, MN;
5. Department of Health Services Policy and Management, Arnold School of Public Health, University of South Carolina, Columbia, SC; and
6. Department of Internal Medicine, School of Medicine, University of South Carolina, Columbia, SC.