1. Division of Endocrinology, Kaiser Permanente of Georgia, and the Division of Endocrinology, Emory University School of Medicine, Atlanta, Georgia, USA
2. Coordinating Center for Clinical Trials, The University of Texas School of Public Health, Houston, Texas, USA
3. Division of Nephrology, University Hospitals Case Western Reserve University, Cleveland, Ohio, USA
4. Division of Cardiovascular Sciences, National Heart, Lung, and Blood Institute, Bethesda, Maryland, USA
5. Preventive Medicine Section, Veterans Affairs Medical Center, Memphis, Tennessee, USA
6. Department of Epidemiology, School of Public Health and Tropical Medicine, Tulane University, New Orleans, Louisiana, USA
7. Division of Nephrology and Hypertension, Case Western Reserve University, University Hospitals Case Medical Center, Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, Ohio, USA