1. Division of Renal Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia;
2. Research Service Line, Department of Veterans Affairs Medical Center, Decatur, Georgia;
3. Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, Georgia;
4. Clinical Research Network, Atlanta Clinical and Translational Science Institute, Emory University School of Medicine, Atlanta, Georgia; and
5. Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia