1. Controlled trial of faecal occult blood testing in the detection of colorectal cancer;Hardcastle, J.D.; Farrands, P.A.; Chamberlain, J.; Balfour, T.W.; Amar, S.S.; Sheldon, M.G.;Lancet,1983
2. Carcinoma of the large bowel in the first four decades;Umpleby, H.C.; Williamson, R.C.N.;Br J Surg; A guide to radiological 272-7. procedures,1984
3. An evaluation of flexible obstructing colorectal carcinoma. Dis Colon Rectum fibreoptic sigmoidoscopy;Vellacott, K.D.; Hardcastle, J.D.;Br Med J,1981
4. TW, 10 Schabel SL, Rittenberg GM, Johnson EG. Carcinoma Hardcastle JD. Flexible fibreoptic sigmoidoscopy and of the colon demonstrated by ultrasound;Farrands, P.A.; Vellacott, K.D.; Amar, S.S.; Balfour,1978
5. A survey of double contrast Colon Rectum;Stoddart, P.G.P.; Virjee, J.,1984