A D Nikapota1, J Cresswell2, S Appleyard3, S L Catt4. 1. Sussex Cancer Centre, Brighton and Sussex University Hospitals NHS Trust, Brighton, Sussex, UK. Electronic address: ashok.nikapota@nhs.net. 2. Department of Urology, James Cook University Hospital, Middlesbrough, UK. 3. Sussex Cancer Centre, Brighton and Sussex University Hospitals NHS Trust, Brighton, Sussex, UK. 4. Sussex Health Outcomes Research & Education in Cancer (SHORE-C), Brighton and Sussex Medical School, University of Sussex, Brighton, UK.