Autores -   L. Peyrat, O Haillot*, F. Bruyere*, J.M. Boutin*,
                   P. Bertrand^** e Y. Lanson*.
                   Department of Urology, CHU Tenon, Departments
                   of Urology* and Biostatistics**, CHU Tours, France.
                   BJU International (2002), 89: 61-66.