Corresponding author: Dr. Erick Alejandro Ramírez Pérez. Hospital Ángeles Mocel. Gelati 29, San Miguel Chapultepec, consultorio 401B, C.P. 11850. México D.F, México. Telephones: (01 55) 5278 2300, (01 55) 5278 2300. E-mail: [email protected] 1 Urologist, Hospital Ángeles Mocel y CEU México. Mexico City, Mexico. 2 Urologist, Hospital Ángeles Mocel. Mexico City, Mexico. 3 Urologist, Hospi...