[Epidemiologic study of the effect of oral contraceptives on reducing the incidence of ovarian cancer].
Liu
M
M
Luo
Z
Z
Yue
Y
Y
D000818:Animals; D002681:China / Q000453:epidemiology; D003278:Contraceptives, Oral, Hormonal; D005260:Female; D006801:Humans; D015994:Incidence; D010051:Ovarian Neoplasms / Q000453:epidemiology*; D014481:United States / Q000453:epidemiology
D003278:Contraceptives, Oral, Hormonal