1. Division of Nephrology, Hypertension, and Renal Transplantation, University of Florida College of Medicine, Gainesville, Florida;
2. Department of Nephrology, San Bortolo Hospital and International Renal Research Institute of Vicenza, Vicenza, Italy;
3. Department of Medicine, University of Padova, Padova, Italy;
4. Division of Cardiology, Baylor University Medical Center, Baylor Heart and Vascular Institute, and Baylor Jack and Jane Hamilton Heart and Vascular Hospital, Dallas, Texas