1. Ann Intern Med 2002; 137: 96-104, 129-141 2. JS Mandel et al. N Engl J Med 1993; 328: 1365-1371 3. JS Mandel et al, J Natl Cancer Institute 1999; 91: 434-437 4. O Cronborg et al. Lancet 1996; 348:1467-71 5. JD Hardcastle et al. Lancet 1996; 348: 1472-77 6. Faivre J et al. Gastroenterology 2004; 126:1674-80. 7. Towler BP et al. In The Cochrane Library, Issue 2 2002. Oxford: Update Software 8. Marshall K. CMAJ 2000; 163: 545-6 9. Thiss-Evensen E et al. Scand J Gastroenterol 1999; April, 34 (4): 414-20 10.Selby JV et al. N Engl J Med 1992; 326: 653-57 11. Newcomb PA et al. J Natl Cancer Inst 1992; 84: 1546-7 12.Winawer SJ et al. J Natl Cancer Inst 1993; 85: 1311-8 13.Winawer SJ et al. N Engl J Med 1993; 329: 1977-81 14.Muller Ad et al. Arch inter Med 1995; 155: 1741-8 15.Pickhardt PJ et al. N Engl J Med 2003; 349: 2191-2200 16. Isis Dove-Edwin et al. Prevention of colorectal cancer by colonoscopic surveillance in individuals with a family history of colorectal cancer : a 16 year, prospective, follow-up study. BMJ 2005 Nov 5; 331:1047 17. Levin TR et al. Complications of colonoscopy in an integrated health care delivery system. Ann Intern Med 2006 Dec 19; 145:880-6.