[1] Univ Calif, Sch Med, Dept Urol, Sacramento, CA 95817 USA
[2] Radboud Univ Nijmegen, Med Ctr, Dept Urol, Nijmegen, Netherlands
[3] UCL Hosp, NHS Fdn Trust, Dept Urol, London, England
[4] Inst Valenciano Oncol, Dept Urol, Valencia, Spain
[5] St Louis Hosp, Paris, France
[6] Univ Roma La Sapienza, St Andrea Hosp, Sch Med 2, Dept Urol, Rome, Italy