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;
5. College of Nursing, Pennsylvania State University, University Park, PA, USA;
6. Department of Social and Public Health, College of Health Sciences and Professions, Ohio University, Athens, OH, USA