Copper intrauterine devices and tubal infertility among nulligravid women.
Vessey
Martin P
MP
Doll
Helen A
HA
D005184:Fallopian Tube Diseases / Q000209:etiology*; D005260:Female; D006801:Humans; D007247:Infertility, Female / Q000209:etiology*; D007435:Intrauterine Devices, Copper / Q000009:adverse effects*; D016017:Odds Ratio; D013997:Time Factors