1. Athens University Hospital Attikon Athens Greece
2. Northwestern University Feinberg School of Medicine Chicago IL USA
3. Duke University Medical Center Durham NC USA
4. National Heart & Lung Institute Royal Brompton and Harefield Hospitals, Imperial College London UK
5. Vanderbilt University Nashville TN USA
6. National Heart Centre Singapore
7. University Hospital Würzburg, and Comprehensive Heart Failure Center University of Würzburg Germany
8. Department of Cardiology and Department of Medical and Health Sciences Linkoping University Linkoping Sweden
9. Peking University People's Hospital Beijing China
10. University of Bergen, Stavanger University Hospital Stanvanger Norway
11. Instituto Fleni Mendoza Argentina
12. Novartis Pharma AG Basel Switzerland