1. National Heart and Lung Institute; Imperial College London and Royal Brompton Hospital; London UK
2. Charité-University Medical Centre, Campus Virchow-Klinikum; Berlin Germany
3. National Heart and Lung Institute; Imperial College London and Harefield Hospital; London UK
4. University of Hull; Hull UK
5. Duke University School of Medicine; Durham NC USA
6. Heart Failure Unit; University of Athens; Athens Greece
7. Faculty of Health Sciences; Linköping University; Linköping Sweden
8. René Dubos Hospital; Pontoise France
9. Paris Descartes University; Paris France
10. AntiCoagulation Europe; Bromley UK
11. San Francisco Veterans Affairs Medical Center; University of California; San Francisco CA USA
12. Wrocław Medical University; Wrocław Poland
13. Hospital La Paz Institute for Health Research (IdiPAZ); La Paz University Hospital; Madrid Spain