1. Cardiff Crohn's disease jubilee: the incidence over 50 years;Rose, J.D.R.; Roberts, G.M.; Williams, G.; Mayberry, J.F.; Rhodes, J.;Gut,1988
2. Crohn's disease in Blackpool - incidence and prevalence 1%8-1980;Fl, Lee; FT, Costello;Gut,1985
3. The incidence and prevalence of inflammatory bowel disease in North Tees Health District;Devlin, H.B.; Datta, D.; Dellipiani, A.W.,1980
4. Fall in the incidence of Crohn's disease;Kyle, J.; Stark, G.;Gut,1980
5. Incidence and prevalence of ulcerative colitis and Crohn's disease;Binder, V.; Both, H.; Hansen, P.K.; Hendricksen, C.; Kreiner, S.; Torp-Pedersen, K.