The problem of possible effects of oral contraceptives on cancer of the breast,
β Scribed by Roy Hertz
- Publisher
- John Wiley and Sons
- Year
- 1969
- Tongue
- English
- Weight
- 591 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0008-543X
No coin nor oath required. For personal study only.
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## Abstract Several epidemiologic studies have reported a protective effect of oral contraceptives (OCs) on ovarian cancer. However, there remain open issues, including better quantification of timeβrelated factors such as time since last use, age at first use and time since first use. We performed
One hundred and seventy four (81% of all) pathologically confirmed new incident cases of female breast cancer identified from a medical center in Taipei from February, 1993 to June, 1994 were selected as the case group. Four hundred and fifty three inpatient controls who were without obstetricgyneco