2Clinical Outcomes of Surgical Therapy Study Group. A comparison of laparcoscopically assisted and open colectomy for colon cancer [ J] . N Engl J Med, 2004, 350 (20): 2050-2059.
3Guillou PJ, Quirke P, Thorpe H, et al. Short - term endopoints of con- ventional versus Laparcoscopic - assisted surgery in patents with colorec- tal cancer (MRC CLASICC trial): multi -centre, randonmized con- trollied trial [J] . Lancet, 2005, 365 (9472) : 1718 -1726.
