1. Silverberg, E. Boring, C.C. Squires, TS: Cancer Statistics 1997 CA; 40:9
2. Word Journal of Surgery: Carcinoma of the Large Bowel-Introduction. Guest Editor, Robert W. BEART, JR. M.D. Sept–Oct. 2001; 561:562
3. Cancer Statistics 2003 CA; 39:3.2003.
4. Trends in colorectal cancer indidence-United States, 1989; MMWR 38: 728
5. Sparounis-General Surgery. University studio press.Thessaloniki 2006; p: 913