1. Department of Urology, Clinicas Hospital, University of Sao Paulo, Sao Paulo, Brazil.
2. Hospital Sirio Libanes, Sao Paulo, Brazil.
3. University of Sao Paulo Medical School, Sao Paulo, Brazil.
4. Department of Urology, Royal Melbourne Hospital, University of Melbourne, Melbourne, Australia.
5. Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, Ohio.