1. Department of Urology, Good Hope Hospital, Sutton Coldfield, United Kingdom.
2. Department of Urology, University Hospital of Coventry and Warwickshire, Coventry, United Kingdom.
3. Department of Urology, Musgrove Park Hospital, Taunton, United Kingdom.
4. School of Surgery, University of Western Australia, Crawley, Australia.
5. Department of Urology, New Cross Hospital, Wolverhampton, United Kingdom.