[1] Tech Univ Munich, Teaching Hosp Med Sch, Klinikum St Elisabeth, Urol Klin, D-94315 Straubing, Germany
[2] Karolinska Hosp, Dept Urol, S-17176 Stockholm, Sweden
[3] City Hosp Nottingham, Dept Urol, Nottingham NG5 1PB, England
[4] Telemark Cent Hosp, N-3906 Porsgrunn, Norway
[5] Hop Foch, Serv Urol, F-92151 Suresnes, France
[6] Hosp Pontchaillou, Serv Urol, F-35033 Rennes, France
[7] Hosp La Fe, Dept Urol, E-46009 Valencia, Spain
[8] Univ Studi Bari, Cattedra Urol, Azienda Osped, Osped Policlinico Consorziale, I-70124 Bari, Italy