1. National Heart and Lung InstituteImperial College London London United Kingdom
2. Department of CardiologyLeiden University Medical Center Leiden The Netherlands
3. Center for Heart and Regenerative MedicineVirginia Tech Carilion Research Institute Roanoke Virginia USA
4. Department of Respiratory SciencesFaculty of MedicineNational Heart and Lung InstituteImperial College London London United Kingdom
5. Department of Biomedical EngineeringGeorge Washington University Washington, DC USA
6. Humanitas Clinical and Research Center Milan Italy
7. Department of Medicine and SurgeryUniversity of Parma Parma Italy