1. Martin, C.J., Parks, T.G., Biggart, J.D.: Solitary rectal ulcer syndrome in Northern Ireland, 1971–1980. Br. J. Surg.68:744, 1981
2. Keighley, M.R.B., Matheson, D.I.: Functional results of rectal excision and endoanal anastomosis. Br. J. Surg.67:757, 1980
3. Lee, J.R., Hares, M.M., Keighley, M.R.B.: A randomised trial to investigate X prep, oral monitr and rectal washout for double contrast barium enema. Clinical Radiology38:591, 1981
4. Foorde, K.A.: Intra-operative Colonoscopy, Techniques, Clinical Practice and Colon Alias. R. H. Hunt, J.D. Waye, editors, London, Chapman and Hall, 1981
5. Keighley, M.R.B.: Anal functions and faecal incontinence. In Topics in Gastroenterology, D.P. Jewell, E. Lee, editors. Oxford, Blackwell Scientific, 1981