1. A comparison of laparoscopically assisted and open colectomy for colon cancer;The Clinical Outcomes of Surgical Therapy Study Group.;N Engl J Med,2004
2. Short-term endpoints of conventional versus laparoscopic-assisted surgery in patients with colorectal cancer (MRC CLASICC trial);Guillou;Multicentre, randomised controlled trial,2005
3. Laparoscopic versus open colorectal surgery;Braga;A randomized trial on short-term outcome,2002
4. Laparoscopic surgery versus open surgery for colon cancer;Veldkamp;Short-term outcomes of a randomised trial,2005
5. Nationwide trends in laparoscopic colectomy from 2000 to 2004;Kemp;Surg Endosc,2008