1. Department of Urology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.
2. Department of Urology, University of California Irvine, Orange, California.
3. Hôpital de La Conception, Service d'Urologie, Marseille, France.
4. AZ Groeninge, Kortrijk, Belgium.
5. Department of Urology, Maxima Medical Center, Veldhoven, The Netherlands.
6. Clinic of Urology, Ankara Numune Training and Research Hospital, Hacettepe, Ankara, Turkey.
7. Department of Urology, Istanbul Medipol University, Istanbul, Turkey.