1. Biological Physics Group, School of Physics and Astronomy
2. Department of Biomedical Engineering, Division of Imaging Sciences and Biomedical Engineering, King's College London, London SE1 7EH, UK
3. Cardiovascular Medicine Group, School of Medicine, University of Manchester, Manchester M13 9PL, UK
4. Manchester Heart Centre, Manchester Royal Infirmary, Manchester M13 9PL, UK
5. Department of Physiology and Pharmacology and Cardiovascular Research Laboratories, School of Medical Sciences, University Walk, Bristol BS8 1TD, UK
6. School of Computer Science and Technology, Harbin Institute of Technology, Harbin, China