1. Department of Urology, University College London Hospitals, London, UK
2. Department of Urology, General Hospital of Athens ‘Gennimatas’, Athens, Greece
3. Department of Urology, Haukeland University Hospital, Bergen, Norway
4. Department of Urology, Darent Valley Hospital, Dartford and Gravesham NHS Trust, Dartford, UK
5. Department of Urology, Careggi Hospital, University of Florence, San Luca Nuovo, Florence, Italy
6. University Hospital Southampton NHS Trust, Tremona Road, Southampton SO16 6YD, UK