Oral contraceptives and breast cancer.
Ranstam
J
J
Olsson
H
H
D001943:Breast Neoplasms / Q000139:chemically induced*; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D006801:Humans; D011247:Pregnancy; D013997:Time Factors
D003276:Contraceptives, Oral