Guzman, R. C., Yang, J., Rajkumar, L., Thordarson, G., Chen, X., & Nandi, S. (1999). Hormonal prevention of breast cancer: Mimicking the protective effect of pregnancy. Proc Natl Acad Sci U S A.

Guzman, Raphael C., Jason Yang, Lakshmanaswamy Rajkumar, Gudmundur Thordarson, Xiaoyan Chen, and Satyabrata Nandi. "Hormonal Prevention of Breast Cancer: Mimicking the Protective Effect of Pregnancy." Proc Natl Acad Sci U S A 1999.

Guzman, Raphael C., et al. "Hormonal Prevention of Breast Cancer: Mimicking the Protective Effect of Pregnancy." Proc Natl Acad Sci U S A 1999.