title: Oral contraceptives and breast cancer.
authors.forename: J
authors.initials: J
authors.lastname: Ranstam
authors.forename: H
authors.initials: H
authors.lastname: Olsson
mesh_terms: D001943:Breast Neoplasms / Q000139:chemically induced*; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D006801:Humans; D011247:Pregnancy; D013997:Time Factors
chemical_list: D003276:Contraceptives, Oral