title: Oral contraceptives and cholangiocarcinoma.
mesh_terms: D002759:Adenoma, Bile Duct / Q000139:chemically induced*; D000328:Adult; D003276:Contraceptives, Oral / Q000009:adverse effects*; D004338:Drug Combinations; D004997:Ethinyl Estradiol / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008113:Liver Neoplasms / Q000139:chemically induced*; D009640:Norethindrone / Q000009:adverse effects*
chemical_list: D003276:Contraceptives, Oral; D004338:Drug Combinations; D004997:Ethinyl Estradiol; D009640:Norethindrone