1. Department of Female Pelvic Medicine and Reconstructive Surgery, Hospital General de Agudos J.M. Penna, Buenos Aires, Argentina

2. Departament of Surgery, Hospital General de Agudos J. M. Penna, Buenos Aires, Argentina

3. Section of Coloproctology, Hospital General de Agudos J.M. Penna, Buenos Aires, Argentina

4. Faculty of Medicine, Buenos Aires University, Buenos Aires, Argentina