1. Department of Biomedicine, Aarhus University, Aarhus C, Denmark
2. National Heart and Lung Institute Imperial College London, London, United Kingdom
3. Institute of Cardiovascular Science, University College London, London, United Kingdom
4. Department of Bioengineering, Imperial College London, London, United Kingdom
5. Department of Cardiology, Aarhus University Hospital, Aarhus N, Denmark
6. Department of Cardiology, Imperial College Healthcare NHS Trust, London, United Kingdom