LOUISE S. ACHESON, M.D.
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To the editor: Horwitz and Feinstein (1) conclude from their epidemiologic study of endometrial cancer that "no association exists between the use of oral contraceptive pills and the subsequent development of endometrial cancer." They correctly point out that a limitation of their data is that only a small number of patients and control subjects had previously used contraceptive pills. Their data may also be limited by the relatively short time from the introduction of contraceptive pills to the present. A typical latent period from exposure to known chemical carcinogens until detection of cancer is 20 to 40 years (2-4). Oral
ACHESON LS. Oral Contraceptive Pills and Endometrial Cancer. Ann Intern Med. ;91:793. doi: 10.7326/0003-4819-91-5-793_2
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Published: Ann Intern Med. 1979;91(5):793.
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