[1] Asklepios Hosp Harburg, Dept Urol, D-21075 Hamburg, Germany
[2] Diakoniekrankenhaus Rotenburg, Dept Urol, Rotenburg, Germany
[3] MHH Med Sch Hannover, Dept Urol, Hannover, Germany
[4] Klinikum Sindelfingen Boblingen, Dept Urol, Sindelfingen, Germany
[5] Helios Klin Mullheim, Dept Urol, Mullheim, Germany
[6] Kreiskliniken Reutlingen, Dept Urol, Reutlingen, Germany
[7] Univ Tubingen, Dept Urol, Tubingen, Germany
[8] Klinikum Heilbronn, Dept Urol, Heilbronn, Germany
[9] Cottolengo Hosp, Dept Urol, Turin, Italy
[10] Univ Florence, Careggi Hosp, Dept Urol, Florence, Italy
[11] New Estense S Agostino Hosp Ausl Modena, Dept Urol, Modena, Italy
[12] Univ Amsterdam, Acad Med Ctr, Dept Urol, NL-1105 AZ Amsterdam, Netherlands
[13] Athens Med Sch, Sismanoglio Hosp, Dept Urol 2, Athens, Greece
[14] Univ Patras, Dept Urol, Patras, Greece
[15] Rangueil Univ Hosp, Dept Urol, Toulouse, France
[16] Paracelsius Med Univ, Dept Urol, Salzburg, Austria
[17] LKH Hall, Dept Urol, Hall In Tirol, Austria
[18] Med Univ Vienna, Dept Urol, Vienna, Austria
[19] Univ Autonoma Barcelona, Fundacio Puigvert, Dept Urol, E-08193 Barcelona, Spain
[20] Univ Basel Hosp, Dept Urol, CH-4031 Basel, Switzerland
[21] CHU Vaudois, Dept Urol, Lausanne, Switzerland
[22] St John Emergency Clin Hosp, Dept Urol, Bucharest, Romania
[23] Ctr Oncol, Dept Urol, Kielce, Poland
[24] Municipal Clin Hosp 57 Moscow, Dept Endourol, Moscow, Russia