Three ports placed in the linea alba of the abdomen (three-midline-ports technique): An alternative approach for laparoscopic cholecystectomy

1. Ruiz-Tovar, J.
2. Ortega, I.
3. Santos, J.
4. Llavero, C.
5. Sosa, L.
6. Armañanzas, L.
7. García, S.
8. Calpena, R.