1. Validation of screening procedures. In: Screening in medical care: reviewintg the evidence: a collection of essays;McKeown, T.,1968
2. Tento fourteen-year effect of breast cancer screening on mortality;Shapiro 5, Venet; W, Strax P.; L, Venet; R, Roeser;J Nati Cancer Institute,1982
3. Carcinoma of the colon. Section complicating chronic ulcerative colitis;JA, Van Heerden; RW, Beart;Dis Colon Rectum,1980
4. The progress of carcinoma of the colon and rectum complicating ulcerative colitis;Hughes, R.G.; Hale, T.J.; Block, G.E.;Surg Gyncecol Obstet,1978
5. Survival with carcinoma arising in mucosal ulcerative colitis;Lavery, I.C.; Chiulli, R.A.; Jaqelman, D.G.;Ann Surg,1982