6Genazzani AR, Gadducei A, Gambaccicni M. Hormone replacement therapy and cancer[J].Climacteric,2001,4(3) : 191.
7Moodley M, Moodley J, Chetty R, et all, The role of steroid contr~ept Jive hormones in the pathogenesis of invasive cervical cancer: a review [J].Int J Cynecol Cancer, 2003,13(2): 1031.