[Population-based surveillance by colonoscopy: effect on the incidence of colorectal cancer. Telemark Polyp Study I]

Thiis-Evensen E, Hoff GS, Sauar J, Langmark F, Majak BM, Vatn MH. [Population-based surveillance by colonoscopy: effect on the incidence of colorectal cancer. Telemark Polyp Study I.] Scand j Gastroenterol 1999; 34(4):414-20