1. Department of Urology, Nossa Senhora da Conceição Hospital, Porto Alegre, Brazil;
2. Division of Urologic Surgery, Washington University School of Medicine, St. Louis, M.O., U.S.A;
3. GlaxoSmithKline Inc., Global R&D, King of Prussia, Pennsylvania, P.A., U.S.A;
4. Center for Integrated Research on Cancer and Lifestyle, Samuel Oschin Comprehensive Cancer Institute and the Division of Urology, Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, C.A., U.S.A;
5. Durham V.A. Medical Center, Durham, N.C., U.S.A.;
6. Department of Urology, University of Illinois at Chicago, Chicago, I.L., U.S.A.