title: Oral contraceptives and breast cancer.
authors.forename: E
authors.initials: E
authors.lastname: Hemminki
mesh_terms: D001943:Breast Neoplasms / Q000139:chemically induced*; D003278:Contraceptives, Oral, Hormonal / Q000009:adverse effects*; D005260:Female; D006801:Humans; D012307:Risk Factors
chemical_list: D003278:Contraceptives, Oral, Hormonal