5World Health Organization.Cancer:Fact sheet,2009[cited 31th August 2009];Available from:URL:http://www.who.int/ mediacentre/factsheets/fs297/en/index.html.
9Heidi Nelson,Daniel J,Sam Wieand,et al.A comparison of laparoscopieally assisted and open colectomy for colon eancer[J].N Engl Meal,2004,350:2050-2059.
10Leung KL, Kwok SP,Lam S et al. Laparoscopie recection of rectosignoid carcinoma:prospective randomisied trial[J]. Lancet,2004,(363): 1187-1192.