1. MacMahon,B., Cole,P. and Brown,J. (1973) Etiology of human breast cancer: a review. J. Natl Cancer Inst., 50, 21–42.
2. Kelsey,J.L., Gammon,M.D. and John,E.M. (1993) Reproductive factors and breast cancer. Epidemiol. Rev., 15, 36–47.
3. Russo,J. and Russo,I.H. (1994) Toward a physiological approach to breast cancer prevention. Cancer Epidemiol. Biomarkers Prev., 3, 353–364.
4. Moon,R.C. (1969) Relationship between previous reproductive history and chemically induced mammary cancer in rats. Int. J. Cancer, 4, 312–317.
5. Moon,R.C. (1981) Influence of pregnancy and lactation on experimental mammary carcinogenesis. In Pike,M.C., Siiteri,P. and Welsch,C.W. (eds) Banbury Report 8: Hormones and Breast Cancer. Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY, pp. 353–364.