1. Division of Urology, Nossa Senhora da Conceição Hospital, Porto Alegre, Brazil
2. Division of Urology, Moinhos de Vento Hospital, Porto Alegre, Brazil
3. Division of Urologic Surgery, Washington University School of Medicine, St Louis, MO, USA
4. Division of Urology, Department of Surgery, Cedars Sinai Medical Center, Los Angeles, CA, USA
5. Section of Urology, Durham VA Medical Center, Durham, NC, USA
6. Department of Urology, Hospital de Clinicas de Porto Alegre, Porto Alegre, Brazil
7. Department of Urology, University of Illinois at Chicago, Chicago, IL, USA