title: Studies on the role of oral contraceptive use in the etiology of benign and malignant liver tumors.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D006528:Carcinoma, Hepatocellular / Q000139:chemically induced* / Q000453:epidemiology; D003276:Contraceptives, Oral / Q000009:adverse effects*; D004739:England; D005260:Female; D006801:Humans; D006965:Hyperplasia; D008113:Liver Neoplasms / Q000139:chemically induced* / Q000453:epidemiology; D008656:Mestranol / Q000009:adverse effects; D008875:Middle Aged; D012042:Registries; D012306:Risk; D013997:Time Factors; D014481:United States
chemical_list: D003276:Contraceptives, Oral; D008656:Mestranol