7Cucino C, Buchner AM, Sonnenherg A. Continued rightward shift of colorectal cancer. Dis Colon Rectum, 2002,45 (8): 1035-1040.
8Rabeneck L, Davila JA, E1-Serag HB. Is there a ture "shift" to the right colnn in the incidence of colorectal cancer? Am J Gastroenterol, 2003,98 (6) : 1400-1409.
9McDermott FT, Hughes ES, Pihl E, et at. Comparative results of surgical management of single carcinomas of the colon and rectum: a series of 1939 patients managed by one surgeon.Br J Surg, 1981,68 (12) : 850-855.
10Birgisson H, Talback M, Gunnarsson U, et al. Improved survival in cancer of the colon and rectum in Sweden. Eur J Surg Oncol, 2005,31 (5) : 845-853.