1. Department of Clinical Pharmacy and Outcomes Sciences, College of Pharmacy, University of South Carolina, Columbia, SC, USA
2. WJB Dorn Veterans Affairs Medical Center, Dorn Research Institute, Columbia, SC, USA
3. Department of Epidemiology and Biostatistics, Norman J. Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
4. Gilead Sciences Inc., Foster City, CA, USA