1. Department of Surgery, Hospital Posadas, Buenos Aires, Argentina.
2. Department of Surgery, Sanatorio de la Mujer, Rosario, Argentina.
3. DAICIM Foundation, Buenos Aires, Argentina.
4. Diagnomed Center, Buenos Aires, Argentina.
5. Department of Surgery, Patkijuli Christian Hospital, Patkijuli, India.
6. Department of Surgery, Aligarh Hospital, Aligarh, India.
7. Department of Surgery, Poissy/Saint Germain Hospital, Poissy, France.