1. Institute of Maternal and Child Research School of Medicine University of Chile Santiago Chile
2. Pathologic Anatomy Service Clínica Las Condes Santiago Chile
3. Urology Department, José Joaquín Aguirre Clinical Hospital, School of Medicine University of Chile Santiago Chile
4. Urology Department Clínica Las Condes Santiago Chile
5. Urology Department San Borja Arriarán Clinical Hospital Santiago Chile