title: Letter: Oral contraceptives and malignant hepatic tumours.
mesh_terms: D002759:Adenoma, Bile Duct / Q000139:chemically induced*; D000328:Adult; D006528:Carcinoma, Hepatocellular / Q000139:chemically induced*; D003276:Contraceptives, Oral / Q000009:adverse effects*; D045166:Estradiol Congeners / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008113:Liver Neoplasms / Q000139:chemically induced* / Q000453:epidemiology; D012042:Registries
chemical_list: D003276:Contraceptives, Oral; D045166:Estradiol Congeners