title: Oral contraceptives and venous thromboembolic disease, surgically confirmed gallbladder disease, and breast tumours. Report from the Boston Collaborative Drug Surveillance Programme.
mesh_terms: D000328:Adult; D000367:Age Factors; D001943:Breast Neoplasms / Q000139:chemically induced* / Q000453:epidemiology; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D005705:Gallbladder Diseases / Q000139:chemically induced* / Q000453:epidemiology; D006306:Health Surveys; D006801:Humans; D011247:Pregnancy; D012189:Retrospective Studies; D012737:Sex Factors; D013923:Thromboembolism / Q000139:chemically induced* / Q000453:epidemiology; D013997:Time Factors
chemical_list: D003276:Contraceptives, Oral