Energy sources for laparoscopic colectomy: A prospective randomized comparison of conventional electrosurgery, bipolar computer-controlled electrosurgery and ultrasonic dissection. Operative outcome and costs analysis

1. Targarona, E.M.
2. Balague, C.
3. Marin, J.
4. Neto, R.B.
5. Martinez, C.
6. Garriga, J.
7. Trias, M.