1. First births to older mothers 1970���1986;Ventura;Am J Public Health,1989
2. Gestational carcinoma of the female breast;Wallack;Curr Probl Cancer,1983
3. Two-stage model for carcinogenesis: epidemiology of breast cancer in females;Moolgavkarsh;J Natl Cancer Inst,1980
4. Carcinoma of the breast and pregnancy;White;Ann Surg,1954