1. Department of Urology, OLV Hospital Aalst, Aalst, Belgium.
2. Department of Urology, St. George's University Hospital, London, United Kingdom.
3. Department of Urology, IRCCS Azienda Ospedaliero—Universitaria di Bologna, Bologna, Italy.
4. Department of Urology, Università Politecnica delle Marche, Ancona, Italy.
5. Department of Urology, University Hospital Ghent, Belgium.