1. Significance and frequency;Classen, M.; Koch, H.; Duodenitis, Demling L.;Bibl Gastroenterol,1970
2. Duodenitis and duodenal ulcer. A biopsy study;Cheli, R.;Digestion,1968
3. The histological classification of duodenitis in fibreoptic biopsy specimens;Whitehead, R.; Roca, M.; Meikle, D.D.; Skinner, J.; Truelove, S.C.;Dige.stion,1975
4. Nonspecific duodenitis: a distinct clinical entity? Castrointest Endo.c 1973; 19: 131-33. ', Cheli R, Giacosa A. Inflammatory cell count and identification in chronic non-specific duodenitis;Endo.scopy,1977
5. Joffe SN, Lee FD, Blumgart LH. Duodeniitis. Clin Gastroenterol 1978; 7:635-50.