4Chmarra MK, Kolkman W, Jansen FW, et al. The influence of experience and camera holding on laparoscopic instrument movements measured with the TrEndo tracking system. Surg Endosc, 2007, 21 : 2069 - 2075.
7Nakamura T, Kokuba Y, Mitomi H, et al. New technique of laparoseopic colectomy with the LAP DISC and a 5-ram flexible scope. Surg Endosc,2006, 20(9): 1501 -1503.
