Guy Vallancien, M.D.: Head of the Department,    Professor of Urology    Universite René Descartes Paris 5. Xavier Cathelineau, M.D.: Senior Urologist François Rozet, M.D.: Senior Urologist Eric Barret, M.D.: Senior Urologist  Nathalie Cathala, Medical Doctor  Annick Mombet, Medical Doctor  Dominique Prapotnich, Medical Doctor