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2. Breast cancer and hormone replacement therapy: collaborative reanalysis of data from 51 epidemiological studies of 52,705 women with breast cancer and 108,411 women without breast cancer;Collaborative Group on Hormonal Factors in Breast Cancer;Lancet,1997
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4. Alcohol, tobacco and breast cancer–collaborative reanalysis of individual data from 53 epidemiological studies, including 58,515 women with breast cancer and 95,067 women without the disease;Hamajima;Br J Cancer,2002
5. Reproductive factors and breast cancer;Kelsey;Epidemiol Rev,1993