1. Institute of Urology and Department of Oncology, University College London, London
2. Department of Urology, University Hospital of Wales, Heath Park, Cardiff
3. Department of Pathology, Western General Hospital, Edinburgh
4. Department of Urology, Queen Elizabeth Hospital, Birmingham
5. Department of Urology, Royal Shrewsbury Hospital, Shrewsbury
6. Department of Urology, Leicester General Hospital, Leicester
7. Cancer Group, Medical Research Council Clinical Trials Unit, London