Ulcerative colitis--prevalence in socio-economic groups.
D000328:Adult; D000367:Age Factors; D003093:Colitis, Ulcerative / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012067:Religion; D012737:Sex Factors; D012959:Socioeconomic Factors