title: Cigarette smoking and ulcerative colitis.
mesh_terms: D000328:Adult; D000368:Aged; D003093:Colitis, Ulcerative / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012008:Recurrence; D012737:Sex Factors; D012907:Smoking