1. Heart Failure and Heart Transplantation Unit; Onassis Cardiac Surgery Center; Athens Greece
2. Cardiology Department; Istituti Clinici Scientifici Maugeri, Centro Medico di Riabilitazione di Veruno; Novara Italy
3. Centro Cardiologico Monzino, IRCCS, Milan, Italy; Department of Clinical Sciences and Community Health; Cardiovascular Section, University of Milan; Milan Italy
4. Department of Cardiology; IRCCS San Raffaele Pisana; Rome Italy
5. Heart Failure and Transplant Unit; Complexo Hospitalario Universitario A Coruña (CHUAC), INIBIC, CIBERCV, UDC; La Coruña Spain
6. Faculty of Medicine and Health Sciences, Translational Pathophysiological Research; University of Antwerp; Antwerp Belgium
7. Cardiovascular Research Laboratory; Biomedical Research Foundation, Academy of Athens; Athens Greece
8. Heart Failure Unit; Attikon University Hospital; Athens Greece
9. Department of Medicine; Karolinska Institutet and Heart and Vascular Theme, Karolinska University Hospital; Stockholm Sweden
10. Department of Nursing; University of Linköping; Linköping Sweden
11. Department of Cardiology; University Heart Center; Zürich Switzerland
12. University of Belgrade School of Medicine; Belgrade Serbia
13. Chefarzt Kardiologie, Klinik Barmelweid AG; Barmelweid Switzerland
14. Heart Failure Unit, Cardiac Department; Guglielmo da Saliceto Hospital; Piacenza Italy