title: Chronic inflammatory bowel disease, cigarette smoking and use of oral contraceptives.
mesh_terms: D000293:Adolescent; D000328:Adult; D003093:Colitis, Ulcerative / Q000209:etiology*; D003276:Contraceptives, Oral / Q000009:adverse effects*; D003424:Crohn Disease / Q000209:etiology*; D005260:Female; D006801:Humans; D008297:Male; D012907:Smoking
chemical_list: D003276:Contraceptives, Oral