1. Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
2. South Carolina SmartState Center for Healthcare Quality, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
3. Rural and Minority Health Research Center, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
4. Office of the Study on Aging, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA