[1] Cornell Univ, Dept Urol, Weill Med Coll, New York, NY 10021 USA
[2] OLV Clin, Dept Urol, Aalst, Belgium
[3] OLV Vattikuti Robot Surg Inst, Melle, Belgium
[4] Stanford Univ, Dept Urol, Palo Alto, CA 94304 USA
[5] Univ Hosp Liege, Dept Urol, Liege, Belgium