Cite
HARVARD Citation
Levi, F. et al. (1987). Oral contraceptive use and breast and ovarian cancer mortality in Switzerland.. Journal of epidemiology and community health. 41 (3), pp. 267-268. [Online].
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Levi, F. et al. (1987). Oral contraceptive use and breast and ovarian cancer mortality in Switzerland.. Journal of epidemiology and community health. 41 (3), pp. 267-268. [Online].