1. From the Program of Cardiovascular Diseases, Center for Applied Medical Research, University of Navarra, Pamplona, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., J.D.)
2. Instituto de Investigación Sanitaria de Navarra (IDISNA), Pamplona, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., J.D.)
3. CIBERCV, Carlos III Institute of Health, Madrid, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., A.B.-G., J.D.)
4. Division of Cardiology, Donostia University Hospital, University of the Basque Country, San Sebastián, Spain (R.Q.)
5. Heart Failure Unit and Cardiology Service, Hospital Universitari Germans Trias i Pujol, Badalona, Spain (A.B.-G.)
6. Department of Medicine, Universitat Autònoma de Barcelona, Spain (A.B.-G.)
7. Department of Cardiology and Cardiac Surgery (J.D.)
8. Department of Nephrology (J.D.), University of Navarra Clinic, University of Navarra, Pamplona, Spain.