The problem of possible effects of oral contraceptives on cancer of the breast.
D000818:Animals; D001943:Breast Neoplasms / Q000139:chemically induced*; D002471:Cell Transformation, Neoplastic; D003276:Contraceptives, Oral; D004967:Estrogens; D005260:Female; D006801:Humans; D008325:Mammary Neoplasms, Experimental / Q000139:chemically induced; D011372:Progestins; D014565:Urogenital Neoplasms / Q000139:chemically induced
D003276:Contraceptives, Oral; D004967:Estrogens; D011372:Progestins