Beral, V. (1997). 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.
Lua i Stíl Chicago (17ú heag.)Beral, V. 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. 1997.
Lua MLA (9ú heag.)Beral, V. 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. 1997.