1. Preliminary evaluation of "duodenitis" by endoscopy and biopsy;Cotton, P.B.; Price, A.B.; Tighe, JR, Beale; J.S.M.;Br Med J,1973
2. The histological classification of duodenitis in fibreoptic biopsy specimens;Whitehead, R.; Roca, M.; Meikle, D.D.; Skinner, J.; Truelove, S.C.;Digestion,1975
3. Gastric and duodenal mucosa in " healthy individuals;Kreuning, J.; Bosman, F.T.; Kuiper, G.; Wal, A.M.; Lindeman, J.;J Clin Pathol,1978
4. Gastroduodenitis-a broader concept of peptic ulcer disease;Greenlaw, R.; Sheahan, D.G.; de Luca, V.; Miller, D.; Myerson, D.; Myerson, P.;Dig Dis Sci,1980
5. Measuring repeatability and validity of histological diagnosis-a brief review with some practical examples;Silcocks, P.B.S.;J Clin Pathol,1983