title: Cases/controls, breast cancer, and the pill.
mesh_terms: D000328:Adult; D001943:Breast Neoplasms / Q000139:chemically induced* / Q000453:epidemiology; D015331:Cohort Studies; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D006113:United Kingdom
chemical_list: D003276:Contraceptives, Oral