1. Department Of Urology, Cardiff, and Vale University Health Board, Cardiff, UK
2. Canterbury Christ Church University Faculty of Social and Applied Sciences, Chatham, UK
3. Department of Urology, Dartford, and Gravesham NHS Trust, Dartford, UK
4. Department of Urology, Royal Glamorgan Hospital, Rhondda Cynon Taff, UK
5. Department of Urology, Dartford, and Gravesham NHS Trust, Darent Valley Hospital, Darenth Wood Road, Dartford, DA2 8DA, UK
6. Canterbury Christ Church University Faculty of Social and Applied Sciences, Chatham ME4 4UF, UK