[1] Univ Ulm, Ulm, Germany
[2] Mansoura Univ, Dept Urol, Mansoura, Egypt
[3] Haukeland Hosp, Div Urol, Dept Surg, N-5021 Bergen, Norway
[4] Skane Univ Hosp, Dept Urol, Malmo, Sweden
[5] Markische Kliniken Ludenscheid, Dept Urol, Ludenscheid, Germany
[6] Oslo Univ Hosp, Dept Urol, Oslo, Norway
[7] Univ Michigan, Dept Urol, Div Urol Oncol, Ann Arbor, MI 48109 USA
[8] Donauspital, Dept Urol, Vienna, Austria
[9] Univ Miami, Dept Urol, Miami, FL USA
[10] Vanderbilt Univ, Med Ctr, Dept Urol Surg, Nashville, TN USA
[11] The Norfolk, Norwich, Norfolk, England
[12] Norwich Univ Hosp, Norwich, Norfolk, England
[13] Univ So Calif, Keck USC Sch Med, Los Angeles, CA USA
[14] Johannes Gutenberg Univ Mainz, Dept Urol, Mainz, Germany
[15] Inselspital Bern, Dept Urol, CH-3010 Bern, Switzerland
[16] Univ Cambridge, Addenbrookes Hosp, Dept Urol, Cambridge CB2 2QQ, England
[17] Klinikum Kassel, Dept Urol, Kassel, Germany
[18] Zhujiang Hosp, Dept Urol, Guangzhou, Guangdong, Peoples R China