[1] Hosp Clin Barcelona, Dept Urol, Barcelona, Spain
[2] Rangueil Univ Hosp, Dept Urol, Toulouse, France
[3] Univ Florence, Unit Urol Minimally Invas Robot Surg & Kidney Tra, Careggi Hosp, Florence, Italy
[4] Univ Autonoma Barcelona, Dept Urol, Fundacio Puigvert, Barcelona, Spain
[5] Hosp Univ Bellvitge, Dept Urol, Barcelona, Spain
[6] Rigshosp, Copenhagen Univ Hosp, Dept Urol, Ctr Canc & Organ Dis, Copenhagen, Denmark
[7] Acad Med Ctr Amsterdam, Dept Surg, Amsterdam, Netherlands