title: Oral contraceptives and breast cancer.
mesh_terms: D000328:Adult; D001943:Breast Neoplasms / Q000139:chemically induced* / Q000453:epidemiology; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008875:Middle Aged; D009664:Norway; D012306:Risk; D013548:Sweden; D013997:Time Factors
chemical_list: D003276:Contraceptives, Oral