1. Departments of Nephrology and Cardiology, University of Navarra Clinic, Pamplona, Spain
2. Program of Cardiovascular Diseases, Center of Applied Medical Research, University of Navarra, Pamplona, Spain
3. Red de Investigación Renal, Madrid, Spain
4. Division of Nephrology IIS-Fundación Jiménez Díaz, University Autonoma of Madrid, Madrid, Spain