DOI:
10.1055/s-00000142
Frauenheilkunde up2date
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References
Collaborative Group on Epidemiological Studies of Ovarian Cancer. Beral V, Doll R. et al.
Ovarian cancer and oral contraceptives: collaborative reanalysis of data from 45 epidemiological studies including 23,257 women with ovarian cancer and 87,303 controls.
Lancet 2008;
371: 303-314
doi:10.1016/S0140-6736(08)60167-1
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