Hashim Uddin Ahmed MRCS, BM, BCh(Oxon), BA(Hons)Medical Research Council Clinical Research Fellow,Specialist Registrar in Urology,Division of Surgery and Interventional Sciences,University College London,London, UK Manit Arya FRCS, FRCS(Urol)Honorary Post-CCT Fellow in Laparoscopic and Minimally Invasive SurgeryKing’s College Hospital,London, UKPeter ScardinoDepartment of UrologyMemorial Sloan Kettering Cancer CenterNew York, USAMark Emberton MD FRCS (Urol)Reader in Interventional Oncology and Honorary Consultant Urologist,University College London Hospitals / University College London Comprehensive Biomedical Research Centre,London, UK