Early oral contraceptive use and breast cancer risk.
McPherson
K
K
Coope
P A
PA
D000328:Adult; D000368:Aged; D001943:Breast Neoplasms / Q000139:chemically induced*; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008875:Middle Aged; D011247:Pregnancy; D012306:Risk; D012984:Software; D013997:Time Factors
D003276:Contraceptives, Oral