1. Division of Surgery and Interventional Sciences, University College London, London, United Kingdom
2. Division of Surgery, Urology Department, University College London Hospitals Trust, London, United Kingdom
3. Department of Health Services Research and Policy, London School of Hygiene and Tropical Medicine, London, United Kingdom
4. Department of Histopathology, University College Hospital London, London, United Kingdom
5. Department of Radiology, University College Hospital London, London, United Kingdom
6. National Institute for Health Research University College London Hospitals National Health Service Foundation Trust/University College London Comprehensive Biomedical Research Centre, London, United Kingdom