title: [New discoveries on oral contraceptives and risk of breast cancer. International data show a moderate increase in risk].
authors.affiliation: Istitutionen för cancerepidemiologi, Akademiska sjukhuset, Uppsala.
authors.forename: I
authors.initials: I
authors.lastname: Persson
mesh_terms: D001943:Breast Neoplasms / Q000139:chemically induced*; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D006801:Humans; D007391:International Cooperation; D012307:Risk Factors
chemical_list: D003276:Contraceptives, Oral