title: Oral contraceptives, postmenopausal oestrogen-progestagen use and breast cancer.
mesh_terms: D001695:Biology; D001943:Breast Neoplasms; D003267:Contraception; D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003276:Contraceptives, Oral; D003339:Corpus Luteum Hormones; D004194:Disease; D004703:Endocrine System; D004967:Estrogens; D005193:Family Planning Services; D006728:Hormones; D009369:Neoplasms; D010827:Physiology; D011374:Progesterone; D011372:Progestins; D011446:Prospective Studies; D012102:Reproductive Control Agents; D012106:Research
chemical_list: D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003276:Contraceptives, Oral; D003339:Corpus Luteum Hormones; D004967:Estrogens; D006728:Hormones; D011372:Progestins; D012102:Reproductive Control Agents; D011374:Progesterone
keywords: Biology; Breast Cancer--etiology; Cancer; Clinical Research; Contraception--beneficial effects; Contraceptive Agents, Female--beneficial effects; Contraceptive Agents--beneficial effects; Contraceptive Methods--beneficial effects; Corpus Luteum Hormones; Diseases; Endocrine System; Estrogens--beneficial effects; Family Planning; Hormones; Neoplasms; Oral Contraceptives--beneficial effects; Physiology; Progestational Hormones; Progesterone--beneficial effects; Prospective Studies; Reproductive Control Agents; Research Methodology