Humphreys W G, Brown J S, Parks T G
Waveney Hospital, Ballymena, Northern Ireland.
Ulster Med J. 1990 Apr;59(1):30-5.
The incidence of Crohn's disease in the community is thought to be changing, with conflicting evidence for increases, decreases or steady state situations being described. A retrospective study, using strict criteria for diagnosis, for a 16 year period in Northern Ireland demonstrated an increasing incidence of Crohn's disease, with a distribution in the population similar to that described in previous studies.