Oral contraceptives and breast cancer.
Hemminki
E
E
D001943:Breast Neoplasms / Q000139:chemically induced*; D003278:Contraceptives, Oral, Hormonal / Q000009:adverse effects*; D005260:Female; D006801:Humans; D012307:Risk Factors
D003278:Contraceptives, Oral, Hormonal