Cancer, C. G. o. H. F. i. B. (1996). Breast cancer and hormonal contraceptives: Collaborative reanalysis of individual data on 53 297 women with breast cancer and 100 239 women without breast cancer from 54 epidemiological studies.

Cancer, Collaborative Group on Hormonal Factors in Breast. Breast Cancer and Hormonal Contraceptives: Collaborative Reanalysis of Individual Data On 53 297 Women With Breast Cancer and 100 239 Women Without Breast Cancer From 54 Epidemiological Studies. 1996.

Cancer, Collaborative Group on Hormonal Factors in Breast. Breast Cancer and Hormonal Contraceptives: Collaborative Reanalysis of Individual Data On 53 297 Women With Breast Cancer and 100 239 Women Without Breast Cancer From 54 Epidemiological Studies. 1996.