1. Internal Medicine Service, Hospital General de la Defensa, Zaragoza, Spain
2. Research Group on Heart Failure, IIS Aragón, Zaragoza, Spain
3. Cardiology Service, Hospital de Barbastro, Barbastro, Spain
4. Internal Medicine Service, Miguel Servet University Hospital, Zaragoza, Spain
5. Urology Service, Miguel Servet University Hospital, Zaragoza, Spain
6. Internal Medicine Service, Lozano Blesa University Hospital, Zaragoza, Spain
7. EpiChron Research Group, Aragon Health Sciences Institute (IACS), IIS Aragón, Miguel Servet University Hospital, Zaragoza, Spain
8. Research Network on Health Services in Chronic Diseases (REDISSEC), Institute of Health Carlos III, Madrid, Spain