1. Sporn MB, Dunlop NM, Newton DL, et al.: Prevention of chemical carcinogenesis by vitamin A and its synthetic analogs (retinoids). Fed Proc 35:1332–1338, 1976
2. Lippman SM, Benner SE, Hong WK: Cancer chemoprevention. J Clin Oncol 12:851–873, 1994
3. Lippman SM, Hong WK, Benner SE: The chemoprevention of cancer, in Greenwald P, Kramer BS, Weed DL (eds): Cancer Prevention and Control. New York, Marcel Dekker, pp 329–352, 1995
4. Russo J, Russo IH: Development of the human mammary gland, in Neville MD, Daniel C (eds): The Mammary Gland. New York, Plenum Publishing Inc, pp 67–93, 1987
5. Vorher H: The Breast. New York, Academic Press, pp 1–18, 1974