1. Centre for Biomedical Engineering, University College London, United Kingdom.
2. Centre for Biomedical Engineering; Institute of Orthopaedics & Musculoskeletal Science, University College London, United Kingdom.
3. Guy's, King's and St. Thomas' Medical and Dental Institute, King's College, University of London, United Kingdom.
4. Institute of Orthopaedics & Musculoskeletal Science, University College London, United Kingdom.