[1] Autonomous Univ Barcelona, Dept Urol, Puigvert Fdn, Barcelona, Spain
[2] Med Univ Vienna, Dept Urol, Ctr Comprehens Canc, Vienna, Austria
[3] Univ Libre Bruxelles, Univ Clin Brussels, Erasme Hosp, Dept Urol, Brussels, Belgium
[4] Univ Vita Salute San Raffaele, IRCCS San Raffaele Hosp, Div Expt Oncol, Dept Urol,Urol Res Inst, Milan, Italy