REFERENCES
- Classen, M. 1971. Progress Report: Fiber-endoscopy of the intestines. Gui 12, 330–338.
- Counsell, P. B. & Dukes, C. E. 1951. The association of chronic ulcerative colitis and carcinoma of the rectum and colon. Brit. J. Surg, 39, 485–495.
- de Dombai, F. T., Watts, J. McK., Watkinson, G. & Goligher, J. C. 1966. Local complications of ulcerative colitis; stricture, pseudopolyposis and carcinoma of the colon and rectum. Bril, med. J. 1, 1442–1447.
- Devroede, G. J., Taylor, W. F., Sauer, W. G., Jackman, R. J. & Stickler, G. B. 1971. Cancer risk and life expectancy of children with ulcerative colitis. New Engl. J. Med. 285, 17–21.
- Deyhle, P., Seuberth, K., Jenny, S. & Demling, L. 1971. Endoscopic polypectomy in the proximal colon. Endoscopy 2. 103–105.
- Deyhle, P. & Demling, L. 1971. Colonoscopy – technique, results, indication. Endoscopy 3, 143–151.
- Dick, A. P., Berridge, F. R. & Grayson, M. J. 1959. The pathological basis of the radiological changes in ulcerative colitis. A study of cases treated by colectomy. Bril. J. Radiol. 32, 432–449.
- Edwards, F. C. & Truelove, S. C. 1964. The course and prognosis of ulcerative colitis. IV Carcinoma of the colon. Gut 5, 1–22.
- Fennessy, J. J., Sparberg, M. B. & Kirsner, J. B. 1968. Radiological findings in carcinoma of the colon complicating chronic ulccrativc colitis. Gut 9, 388–398.
- Goldgräber, M. B., Humphreys, E. M., Kirsner, J. B. & Palmer, W. 1958. Carcinoma and ulcerative colitis; a clinical-pathological study. Gastroenterology 34, 809–839.
- Goligher, J. C., de Dombal, F. T., Watts, J. McK. & Watkinson, G. 1968. p. 177 in Ulcerative Colitis. Baillière Tindall & Cassell.
- Hinton, J. M. 1966. Risk of malignant change in ulcerative colitis. Gut 7, 427–433.
- Hulten, L., Kewenter, J. & Åhrén, C. 1972. Precanccr and carcinoma in chronic ulcerative colitis. A histopathological and clinical investigation. Scand. J. Gastroent. 7, 663–669.
- MacDougall, I. P. M. 1964. The cancer risk in ulcerativc colitis. Lancet 2, 655–658.
- Morson, B. C. & Pang, L. S. C. 1967. Rectal biopsy as an aid to cancer control in ulcerativc colitis. Gut 8, 423–424.
- Nagasako, K., Yazawa, C. & Takcmoto, T. 1971. Observations of the terminal ileum. Endoscopy I, 45–51.
- Nagasako, K., Nagai, K., Suzuki, H., Yazawa, C. & Takemoto, T. 1972. Fiberscopic diagnosis of early cancer of the colon. Endoscopy 4, 1–5.
- Nefzger, M. D. & Acheson, E. D. 1963. Ulcerative colitis in United States Army in 1944. Gut 4, 183–192.
- Niwa, H., Utsumi, Y., Nakamura, T., Yoshida, A., Yoshitoshi, Y., Fujino, M., Kaneko, E., Kasumi, A. & Mutsumoto, M. 1969. Clinical experience of colonic fiberscope. Gastroenterological Endoscopy (Tokyo) II, 163–173.
- Slaney, G. & Brooke, B. N. 1959. Cancer in ulcerative colitis. Lancet 2, 694–698.
- Warwick, R. R. G., Sumerling, M. D., Gilmour, H. M. & Shearman, D. J. C. 1973. Colonoscopy and double contrast barium enema in chronic ulcerativc colitis. Amer. J. Roentgenol, (in press).
- Williams, C. & Muto, T. 1972. Examination of the whole colon with the fibreoptic colonoscope. Brit. med. J. 3, 278–281.
- Wolff, W. I. & Shinya, H. 1971. Colonofiberoscopy. J. Amer. med. Ass. 2/7, 1509–1512.