title: Oral contraceptives and breast cancer.
mesh_terms: D000328:Adult; D001943:Breast Neoplasms / Q000139:chemically induced*; D003277:Contraceptives, Oral, Combined / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008875:Middle Aged; D010298:Parity; D012307:Risk Factors; D013997:Time Factors; D006113:United Kingdom
chemical_list: D003277:Contraceptives, Oral, Combined