1. Clinical experience with suction biopsy of the rectal mucosa;Flick, A.L.; Voegtlin, K.F.; Rubin, C.E.;Gastroenterology,1972
2. Biopsy studies in ulcerative colitis;Truelove, S.C.; Richards, W.C.D.;BrMedj,1956
3. The value of rectal biopsy in the diagnosis of ulcerative colitis;Matts, S.G.F.;QJMed
4. Correlations between defined sigmoidoscopic appearances and other measures of disease activity in ulcerative colitis;Powell-Truck, J.; Day, D.W.; Buckell, N.A.; Wadsworth, J.; Lennard-Jones, J.E.;Dig Dis Sci,1982
5. Responses to drug therapy in ulcerative colitis;Korelitz, B.I.; Sommers, S.C.;AmJ Gastroenterol,1975