1. Research student, Department of Mechanical Engineering, University College London, Torrington Place, London, UK
2. Reserach student, Department of Mechanical Engineering, University College London, Torrington Place, London, UK
3. Senior Lecturer in Biomedicine, Division of Medicine, University College London, London, UK
4. Reader of Biomedical Engineering, Department of Engineering Science, Institute of Biomedical Engineering, University of Oxford, Oxford, UK
5. Bonfield Chair of Biomaterials, Department of Mechanical Engineering, University College London, Torrington Place, London, UK