[1] Med Univ Vienna, Vienna Gen Hosp, Dept Urol, Comprehens Canc Ctr, Vienna, Austria
[2] New York Presbyterian Hosp, Dept Urol, Weill Cornell Med Coll, New York, NY USA
[3] Univ Texas Southwestern Med Ctr Dallas, Dept Urol, Dallas, TX 75390 USA
[4] Ist Sci San Raffaele, Urol Res Inst, Dept Urol, Milan, Italy
[5] Acad Med Ctr Hosp Santa Maria Misericordia, Urol Unit, Udine, Italy
[6] Univ Sheffield, Acad Urol Unit, Sheffield, S Yorkshire, England