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 for the Study of Aging, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA;
5. Health Studies, University of Rhode Island, Kingston, RI, USA;
6. Department of Health Administration, Virginia Commonwealth University, Richmond, VA, USA