title: Oral contraceptives and breast cancer.
authors: W H
authors: WH
authors: Crosby
mesh_terms: D001943:Breast Neoplasms / Q000139:chemically induced* / Q000209:etiology; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D006801:Humans; D012307:Risk Factors
chemical_list: D003276:Contraceptives, Oral