1. The BioRobotics Institute, Polo Sant'Anna Valdera, Scuola Superiore Sant'Anna, Pontedera, Pisa, Italy.
2. Department of Informatics, Centre for Robotics Research, NIHR Biomedical Research Centre, King's College London, London, United Kingdom.
3. Department of Urology, King's College London, Guy's Hospital, London, United Kingdom.
4. MRC Centre for Transplantation, NIHR Biomedical Research Centre, King's College London, London, United Kingdom.