1. Division of Surgery and Interventional Science, University College London, London, United Kingdom
2. Centre for Medical Image Computing, University College London, London, United Kingdom
3. Service d'Urologie, Hôpital Claude Huriez, Centre Hospitalier Régional Universitaire de Lille, Lille, France
4. Department of Histopathology, University College London Hospitals National Health Service Foundation Trust, London, United Kingdom
5. University College Hospital/University College London National Institute for Health Research Comprehensive Biomedical Research Centre and Clinical Effectiveness Unit, Royal College of Surgeons of England, London, United Kingdom